Relevant bibliographies by topics / Membrane electrolyzer

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Academic literature on the topic 'Membrane electrolyzer'

Author: Grafiati
Published: 4 June 2025
Last updated: 23 June 2025

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Journal articles on the topic "Membrane electrolyzer"

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Bae, Chulsung. "(Invited) Overview of Ion-Conducting Polymer Membranes and Membrane Separators for Water Electrolysis." ECS Meeting Abstracts MA2024-01, no. 34 (2024): 1691. http://dx.doi.org/10.1149/ma2024-01341691mtgabs.

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Traditional liquid alkaline electrolyzer uses a porous diaphragm to allow diffusion of hydroxide ion from a feed of concentrated KOH solution while separating anode and cathode and suppressing mixing of produced H2 and O2 gases. Although liquid alkaline electrolyzer is considered as a matured technology, recent renaissance of new electrode separators suggests there is significant potential for improvement in efficiency and cost reduction by lowering area specific resistance and increasing operation current density. Ion-conducting polymers (e.g., proton or hydroxide) are used as a key component of polymer electrolyte membranes, such as acidic proton exchange membrane (PEM) and alkaline anion exchange membrane (AEM), in electrochemical energy conversion and storage technologies including water electrolyzers. For example, the state-of-the-art PEM electrolyzers have used Nafion for a PEM and ionomer catalyst binder for decades, though it is not ideal proton-conducting membrane material for those applications. Recent pressure on perfluoroalkyl substrates (PFASs) from government and environmental activist groups due to their environmental and health hazard has attracted the development of alternative polymer electrolyte membranes based on hydrocarbon polymers within electrochemical society. Compared to perfluorosulfonated Nafion, hydrocarbon ion-conducting polymers (both PEMs and AEMs) can offer advantages of flexible synthetic tunability, lower gas permeability, and importantly lower production cost. In this tutorial, an overview of recent progress in the development of advanced porous membrane separators, PEMs and AEMs, their key membrane properties, and the state-of-the-art performance in applications of water electrolyzers will be discussed. Figure 1
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Jansonius, Ryan, Marta Moreno, and Benjamin Britton. "High Performance AEM Water Electrolysis with Aemion® Membranes." ECS Meeting Abstracts MA2022-01, no. 39 (2022): 1723. http://dx.doi.org/10.1149/ma2022-01391723mtgabs.

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By 2030 up to 50% of energy is expected to be carried in the bonds of H2. Global electrolysis capacity must increase from the current 240 MW to an anticipated 300 GW in 2030 and 3500 GW in 2050 to enable this transition. Alkaline and PEM electrolyzers are commercially mature with the currently market share of new installations roughly an equal split between these technologies. However, each of these electrolyzers are associated with challenges – alkaline electrolyzers operate at low current density, and require high concentration electrolytes (30 wt% KOH) to conduct hydroxides through the porous electrode separator (I.e., Zirfon). PEM electrolyzers use a proton conductive membrane to enable high current densities, however, running the reaction in acidic electrolyte requires platinum group catalysts and component coatings that hinder scalability at 2050 targets. AEM water electrolyzers address both of these challenges by pairing anion exchange membrane with alkaline electrolyte to enable high current density operation, at high pressure, without noble metal catalysts. These attributes enable the most cost-effective green hydrogen - bringing the DOE hydrogen shot target of $1/kg within reach. Anion exchange membrane chemistries have previously hindered this type of electrolyzer – AEMs based on quaternary amines, or pendant imidazolium groups chemically degrade in concentrated alkaline electrolyte, and mechanically degrade (from swelling) in low concentration alkaline media. Ionomr’s Aemion+ membranes are based on a sterically-protected polybenzimidazole chemistry and are chemically robust (stable in up to 10 M KOH), and exhibit low swelling to enable operation in low concentration electrolytes. These membranes are an enabling technology for long duration water and CO2 electrolysis. This talk highlights how Ionomr’s Aemion+ membranes enable performance in excess of 1 A/cm2 at 1.8 V with non-PGM catalysts and a variety of configurations, and >4000 hours of durability in continuous operation. Figure 1
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Lysenko, Olha, and Valerii Ikonnikov. "Investigation of energy efficiency of hydrogen production in alkaline electrolysers." Technology audit and production reserves 5, no. 3(73) (2023): 11–15. http://dx.doi.org/10.15587/2706-5448.2023.290309.

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The object of research is the energy efficiency of the electrolysis process in electrolyzers with alkaline electrolyte electrical parameters. The existing problem consists in obtaining the energy efficiency of the process in an electrolyzer with an alkaline electrolyte of more than 65 %. To solve this problem, it is proposed to manufacture an electrolyzer with metal electrodes made of stainless steel and separated from each other by a gas-tight membrane (Bologna cloth) to separate hydrogen and oxygen gases. To establish the energy efficiency characteristics, an experimental installation was made, and the necessary measuring equipment was also used. In the course of the work, a research methodology was developed and the necessary calculation of the measured values was carried out. As a result, the influence of the operating voltage on the consumption of the current flowing through the electrodes of the electrolyzer and the power consumed by it was revealed, the values of which increase with the increase of the operating voltage. It was established that the energy efficiency of the process in electrolyzers with an alkaline electrolyte decreases with an increase in the operating voltage. At operating voltages of 3 V, 4 V, and 5 V, the energy efficiency is 85.7 %, 77 %, and 70 %, respectively. The proposed technique involves conducting experimental studies directly on a functioning electrolyzer. The practical implementation of the use of a gas-tight membrane (Bologna fabric) can help reduce the cost of manufacturing an electrolyzer. Therefore, the presented research will be useful for the industrial production of hydrogen.
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Lindquist, Grace, Raina A. Krivina, Sarah Beaudoin, Nathan Stovall, and Shannon W. Boettcher. "(Energy Technology Division Graduate Student Award sponsored by BioLogic) Design Principles for High-performance and Durable Anion Exchange Membrane water Electrolyzers." ECS Meeting Abstracts MA2022-01, no. 35 (2022): 1441. http://dx.doi.org/10.1149/ma2022-01351441mtgabs.

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Water electrolysis powered by renewable sources such as wind or solar produces clean hydrogen gas, which is used for many industrial processes and will be essential in a future clean energy economy. Alkaline water electrolysis (AWE) and proton exchange membrane (PEM) electrolysis are mature technologies at megawatt to gigawatt scale. AWE uses earth abundant electrode and catalyst materials submerged in caustic liquid electrolyte (usually KOH or NaOH) separated by a porous diaphragm. This configuration can suffer from gas crossover and shunt current limitations. PEM electrolyzers circumvent these barriers by using an ionically-conductive solid electrolyte membrane that reduces gas crossover and allows for pure water operation that eliminates shunt currents. However, these membranes create a locally acidic environment that necessitates the use of expensive platinum-group-metal (PGM) catalyst materials and hardware coatings. Anion exchange membrane (AEM) electrolysis is an emerging technology that has the potential to combine the benefits of liquid alkaline and PEM. AEM electrolyzers use an anion-selective membrane, maintaining the pure water operation of PEM but creating a locally-alkaline environment allowing for the use of non-PGM materials. However, AEM electrolysis is still immature. In particular, the hydroxide-conducting membrane and ionomer have not yet achieved sufficient stability in pure water to compete with PEM systems. The specific dominant degradation mechanism and location has also not been conclusively identified. Further, while non-PGM catalysts such as Ni- and Fe-based oxyhydroxide catalysts out-compete PGM catalysts in three-electrode KOH studies, this performance does not carry to the pure water electrolyzer configuration. In my talk I report AEM electrolyzer performance below 2 V at 1 A·cm-2 in pure water for both PGM and non-PGM anode catalysts. I will also discuss the specific degradation mechanism of the ionomer and membrane during electrolyzer operation with both catalysts. Understanding the differences in performance and durability with precious metal and earth abundant materials is key for AEMs to compete with current electrolyzer technologies. I compare the performance and stability of five Ni-, Co-, and Fe-based catalysts and compare to IrOx. XPS and cross-sectional SEM data show oxidation of the ionomer binder at the anode for all catalysts, which results in significant degradation and performance loss. I also show additional degradation is induced by introducing soluble Fe species, indicating separate mechanisms beyond ionomer degradation are present in the non-PGM systems. In addition to the fundamental insights into the dynamic behavior of non-PGM catalysts and oxidative durability of ionomeric polymer materials, these findings contribute to bringing low-cost AEM electrolyzer technology to scale. Figure 1
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Hebelmann, Matthias, Jason Keonhag Lee, Sudong Chae, et al. "Pure-Water-Fed Forward-Bias Bipolar Membrane CO2 Electrolyzer." ECS Meeting Abstracts MA2024-02, no. 62 (2024): 4188. https://doi.org/10.1149/ma2024-02624188mtgabs.

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Electrochemical CO2 reduction (ECO2R) has emerged as a promising approach to directly produce carbon-containing fuels from renewable sources and CO2, offering a practical opportunity to mitigate greenhouse-gas emissions and climate change. The key challenges to realize this vision are CO2 electrolyzers with high energy efficiency, faradaic efficiency (FE), carbon-conversion efficiency and can also maintain durable operations. As high alkalinity is beneficial for ECO2R reactivity and selectivity, flow cells or zero-gap devices supported by alkaline aqueous electrolytes are used to demonstrate outstanding ECO2R performance. However, this leads to two major challenges. First is the formation of (bi)carbonates (CO3 2-/HCO3 -) and subsequent CO2 crossover issue resulting in either reactant loss or additional energy penalty of regenerating and purifying CO2. Second is that alkali cations transfer through the membrane and build up on the cathode and result in carbonate salt precipitation, which leads to blockage of CO2 transport pathways, efficiency loss and device failure. Therefore, it is an urgent task to develop novel reactions to address both challenges. Herein, we design asymmetrical bipolar membranes assembled into a zero-gap CO2 electrolyzer fed with pure water, solving both challenges. By investigating and optimizing the anion-exchange-layer thickness, cathode differential pressure, and cell temperature, the forward-bias BPM CO2 electrolyzer achieves CO faradic efficiency over 80% with partial current density over 200 mA cm-2 at less than 3.0 V with negligible CO2 crossover. In addition, this electrolyzer achieves 0.61 and 2.1 mV h-1 decay rate at 150 and 300 mA cm-2 for 200h and 100h, respectively. Post-mortem analysis indicates that the deterioration of catalyst/polymer-electrolyte interfaces resulted from catalyst structural change and ionomer degradation at reductive potential shows the decay mechanism. All these results point to future research direction and show a promising pathway to deploy CO2 electrolyzers at-scale for industrial applications.
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Kuleshov, V. N., N. V. Kuleshov, S. V. Kurochkin, A. A. Gavrilyuk, M. A. Klimova, and O. Yu Grigorieva. "Polysulfone-Based Anion-exchange Membranes for Alkaline Water Electrolyzers." Èlektrohimiâ 60, no. 8 (2024): 553–62. https://doi.org/10.31857/s0424857024080038.

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By the method of chloromethylation and further quaternization of polysulfone, the synthesis of an anion-exchange membrane for electrolyzers of water with an alkaline electrolyte was carried out. The characteristics of the resulting membrane are determined: porosity, electrical conductivity, gas density. A comparative analysis of the characteristics of the membrane and the porous diaphragm (analog of ZifronPerl) is given, the results of tests in the composition of an alkaline electrolyzer battery in comparison with a porous diaphragm based on unmodified polysulfone with hydrophilic filler (TiO2) synthesized by phase inversion are presented. A possible mechanism of degradation of the main chain of quaternized polysulfone is described. The ways of further development of the technology of anion-exchange membranes based on polysulfone are proposed.
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Rohman, Abdul, Rusdianasari, and Aida Syarif. "Generating Hydrogen Gas with a Polyvinyl Alcohol Membrane Dry Cell Electrolyzer Using KOH Electrolyte." International Journal of Research in Vocational Studies (IJRVOCAS) 4, no. 2 (2024): 10–15. http://dx.doi.org/10.53893/ijrvocas.v4i2.291.

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Global environmental concerns requiring excellent air quality have prompted the development of a variety of eco-friendly energy sources. Hydrogen gas is an environmentally friendly option that may be created using an electrolysis device that converts water into hydrogen (H2) and oxygen (O2). In this study, a dry cell electrolyzer with a polyvinyl alcohol (PVA) membrane was used as a separator between two stainless steel 316 electrodes to generate a high hydrogen yield. The hydrogen gas production from the dry cell electrolyzer was determined using gas chromatography. The results showed that using a KOH electrolyte and a PVA membrane considerably enhanced the hydrogen gas composition. Hydrogen gas compositions after electrolysis using a dry cell electrolyzer without a PVA membrane and KOH electrolyte concentrations of 0 M, 0.04 M, 0.07 M, and 0.11 M being 13.70%, 25.10%, 32.50%, and 15.60%, respectively. With a PVA membrane, the hydrogen compositions were 71.50%, 89.10%, 80.50%, and 84.60%, respectively. The results of these experiments show that the most hydrogen gas was produced utilizing a dry cell electrolyzer with a PVA membrane and a 0.04 M KOH electrolyte concentration. When a PVA membrane and a KOH electrolyte are utilized in electrolysis, the hydrogen gas composition improves significantly compared to when either is utilized.
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Oliveira, Alexandra M., Brian P. Setzler, and Yushan Yan. "Anode-Fed Anion Exchange Membrane Electrolyzers for Hydrogen Generation Tolerant to Anion Contaminants." ECS Meeting Abstracts MA2022-02, no. 44 (2022): 1679. http://dx.doi.org/10.1149/ma2022-02441679mtgabs.

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Anion exchange membrane water electrolysis has the ability to produce green hydrogen with high voltage efficiencies at low capital cost with zero CO2 emissions. The alkaline environment of these devices allows for the use of economical metal catalysts and anion exchange membranes (AEMs) that conduct hydroxide ions and are less expensive than their proton exchange membrane counterparts. However, research has shown that anion contamination of hydroxide exchange membranes can lead to significant performance losses in anion exchange membrane fuel cells (AEMFCs), particularly when air fed to the oxygen-reducing cathode contains CO2.1 A similar contamination effect occurs in anion exchange membrane electrolyzers (AEMELs), when dissolved CO2 in the electrolyte reacts to form carbonate (CO3 2-) and bicarbonate (HCO3 2-) anions which compete with the hydroxide (OH-) ions that must be conducted through the AEM and ionomer. The presence of these and other anion contaminants can lower the ionic conductivity of the cell. Under high current density operation, an AEMEL undergoes a self-purging process that uses an ionic potential gradient to push hydroxide and anion contaminants through the membrane to the anode. This creates a significant pH gradient between cathode and anode that can lead to concentration polarization which further lowers performance.2 In this work, we use 1-D CO2 transport modeling and experiments to show how altering the electrolyte feed method allows for CO2-tolerant AEMEL operation in several different electrolytes. The unique advantages of AEMELs over AEMFCs and proton exchange membrane electrolyzers (PEMELs) are that (1) this self-purge occurs during normal operation, and (2) they allow for flexibility in the location of the potentially contaminated water feed. In PEMELs, water is intuitively fed to the anode, and cation contaminants are purged through the entire MEA to the cathode. Although water in AEMELs is intuitively fed to the cathode, where it is consumed in the hydrogen evolution reaction, water can diffuse easily through the membrane, allowing for it to be fed as an anolyte to the oxygen-evolving side of the cell. This allows for better contaminant rejection because anions can be concentrated mostly on the anode side of the electrolyzer. The model described in this paper predicts that an anode-fed AEMEL can more easily purge CO2 without contaminating as much of the AEM or inducing as high of a pH gradient due to more rapid self-purging of anions. We find experimentally that AEMELs with DI water anolyte are more tolerant of forced CO2 contamination than those with DI water catholytes, which is likely one of the major reasons for superior anode-feed performance. Furthermore, electrolyzer operation at high current densities can lead to voltage recoveries greater than 200 mV due to self-purging of anions. Although supporting electrolytes such as potassium hydroxide can mitigate catholyte contamination, the anion self-purging shows that electrolyzer operation in DI water and even tap water (containing fluoride, chloride, and nitrates) can improve when employing an anode feed. 1. Y. Zheng et al., Energy Environ. Sci., 12, 2806–2819 (2019). 2. B. P. Setzler, L. Shi, T. Wang, and Y. Yan, in ECS Meeting Abstracts, vol. MA2019-01, p. 1824–1824, IOP Publishing (2019) https://iopscience.iop.org/article/10.1149/MA2019-01/34/1824.
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Lee, Albert S. "Poly(pyrrolidinium)-Based Anion Exchange Membranes and Ionomers for Anion Exchange Membrane Water Electrolyzers." ECS Meeting Abstracts MA2024-02, no. 43 (2024): 2874. https://doi.org/10.1149/ma2024-02432874mtgabs.

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Anion exchange membranes and ionomers are a critical technology for next generation energy conversion devices such as fuel cells, water electrolyzers, and CO2 electrolyzers. However, alkaline stability and poor understanding of performance and durability limiting descriptors have limited the development of a commercial benchmark membrane and ionomer, as is the case for Nafion and other perfluorinated ionomers in proton exchange membranes. In this talk, the chemistry of some new poly(pyrrolidinium)-functionalized membranes and ionomers will be introduced, including their simple membrane chemistry based on radical cyclopolymerization of diallylammonium functionalized aryl-ether-free backbones and benzene-free polydiallylammonium ionomeric binders. Synergistically integrated membranes and ionomers exhibit excellent alkaline stability, tunable IEC and crosslink density, controllable water uptake, which help elucidate critical performance-defining features of anion exchange membrane water electrolyzer membrane electrode assemblies.
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Yang, Fan, Qiang Sun, and Cortney Mittelsteadt. "Advanced PEM Electrolyzer Membrane for Hydrogen Crossover Mitigation." ECS Meeting Abstracts MA2023-02, no. 39 (2023): 1898. http://dx.doi.org/10.1149/ma2023-02391898mtgabs.

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Proton Exchange Membrane (PEM) electrolyzers are a promising technology to produce hydrogen as a clean energy carrier. However, a significant challenge is hydrogen crossover, especially at high pressures (>40 bar) and when utilizing thin (<100 um) membranes. This poses significant safety hazard due to the mixing of H2 with oxygen, especially in the balance of plant due to higher void volumes. Mitigating membrane crossover is therefore critical to the safety of the entire PEM electrolyzer system. Several research groups have demonstrated preliminary works on the H2 crossover mitigated membrane for PEM electrolyzers. Klose et al. [1] implemented a Pt interlayer between one piece of NR212 membrane and a piece of N115 membrane. The work showed significant reduction of H2 crossover in their design compared to the regular PFSA membrane. However, the work only demonstrated the effectiveness of crossover reduction under ambient pressure. Moreover, the spraying method they proposed is not readily scalable. Stahler et al. [2] demonstrated that applying an interlayer between the anode catalyst layer and recombination layer will help to reduce the H2 crossover. However, this work also failed to demonstrate mitigation at high H2 pressure. Additionally, each of these methods used Pt/C in the recombination layer. Carbon, though robust in the fuel cell applications may readily oxidize at the higher electrolyzer potentials. This could have consequences on membrane durability. Preliminary data has demonstrated that our proposed mitigate strategy can significantly reduce the H2 crossover. The MEA with regular NR212 membrane cannot be operated safely under 70 oC under even mild pressure. However, with our addition of the highly efficient recombination layer, the crossover can be dropped to 6% LEL even at 40 bar. This discovery will help to improve the PEM electrolyzer safety dramatically. References: C. Klose et al 2018 J. Electrochem. Soc. 165 F1271 A. Stähler et al 2022 J. Electrochem. Soc. 169 034522
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Dissertations / Theses on the topic "Membrane electrolyzer"

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BONIZZONI, SIMONE. "Anion Conducting Polymers for Fuel Cell and Electrolyzer." Doctoral thesis, Università degli Studi di Milano-Bicocca, 2022. http://hdl.handle.net/10281/382284.

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The hydrogen, as energy vector, is considering one promising green, sustainable, low-cost alternative to hydrocarbon fuels. In the circular hydrogen economy, the fuel cell technologies play a crucial role of the energy conversion and, in particular, Anion Exchange Membrane Fuel Cell are retained to be very promising for the high-power delivery, the short waiting time before providing energy, the low working temperature. My PhD is focus on synthesis and characterization of anionic conducting polymer for fuel cell and electrolyzer applications. The first part of activities is focused on the study of new chemical modifications of polyfluorinated (Aquivion®), aliphatic polyketones, polystyrene polymer matrix to address the main drawbacks of the chemical and electrochemical stability and also the high cost. The synthesis methods involve the organic chemistry procedure for examples Pall-Knorr reaction, Baeyer-Villiger oxidation, methylation process. The physical-chemical characterization part is aimed to the better understand the properties of the functionalized polymer matrix. The polymer structure is investigated by spectroscopes technique for example FTIR and solid-state NMR while, the thermal properties and their stability are determined by TGA and DSC measurements. For the promising work of Aquivion® modification, I also performed accelerated ageing treatment for testing the chemical and electrochemical stability and I used them in for water Electrolyzer application. The functionalized polymers show interesting and promising properties for fuel cell and electrolyzer applications and, in particular, modified Aquivion® membranes show excellent stability in alkaline environmental and archive 130 mA cm-2 at 80°C. The results of Aquivion® modification are published on two international journals and the polyketones functionalization work is undergoing publication.<br>The hydrogen, as energy vector, is considering one promising green, sustainable, low-cost alternative to hydrocarbon fuels. In the circular hydrogen economy, the fuel cell technologies play a crucial role of the energy conversion and, in particular, Anion Exchange Membrane Fuel Cell are retained to be very promising for the high-power delivery, the short waiting time before providing energy, the low working temperature. My PhD is focus on synthesis and characterization of anionic conducting polymer for fuel cell and electrolyzer applications. The first part of activities is focused on the study of new chemical modifications of polyfluorinated (Aquivion®), aliphatic polyketones, polystyrene polymer matrix to address the main drawbacks of the chemical and electrochemical stability and also the high cost. The synthesis methods involve the organic chemistry procedure for examples Pall-Knorr reaction, Baeyer-Villiger oxidation, methylation process. The physical-chemical characterization part is aimed to the better understand the properties of the functionalized polymer matrix. The polymer structure is investigated by spectroscopes technique for example FTIR and solid-state NMR while, the thermal properties and their stability are determined by TGA and DSC measurements. For the promising work of Aquivion® modification, I also performed accelerated ageing treatment for testing the chemical and electrochemical stability and I used them in for water Electrolyzer application. The functionalized polymers show interesting and promising properties for fuel cell and electrolyzer applications and, in particular, modified Aquivion® membranes show excellent stability in alkaline environmental and archive 130 mA cm-2 at 80°C. The results of Aquivion® modification are published on two international journals and the polyketones functionalization work is undergoing publication.
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Rossi, Gianmarco. "modeling of proton exchange membrane water electrolyzer for green hydrogen production from solar energy." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2021.

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Hydrogen is considered one of the means by which to store energy coming from renewable and intermittent power sources. With the growing capacity of renewable energy sources, a storage system is required to not waste energy. PEM electrolysis provides a sustainable solution for the production of hydrogen and is well suited to couple with energy sources such as solar and wind. This work reports the development of simulation software to estimate the performance of a proton exchange membrane electrolyzer working at atmospheric or low pressure conditions connected to a solar energy source. The electrolyzer is defined from a validated reference semi-empirical model, which allows for simulating the electrochemical, thermal and H2 output flow behaviours with enough precision for engineering applications. An algorithm for a fitting procedure to characterize commercial products, and functions for power modulation have been implemented. A series of simulations have been carried on, starting from real photovoltaic data of input power, and the output values have been discussed, with particular attention to output flow rate, thermal behaviour and the cooling demand in order to preserve the operation of the electrolyzer.
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Sundin, Camilla. "Environmental Assessment of Electrolyzers for Hydrogen Gas Production." Thesis, KTH, Skolan för kemi, bioteknologi och hälsa (CBH), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-260069.

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Hydrogen has the potential to become an important energy carrier in the future with many areas of applications, as a clean fuel for transportation, heating, power generation in places where electricity use is not fit, etc. Already today hydrogen plays a key role in numerous industries such as petroleum refineries and chemical industries. There are different production methods for hydrogen. Today, natural gas reforming is the most commonly used. With the growing importance of green production paths, hydrogen production by electrolysis is expected to grow. Two main electrolyzer technologies are used today; alkaline and polymer electrolyte membrane electrolyzer. High-temperature electrolyzers are also interesting techniques, where solid oxide is under development and molten carbonate electrolyzers is researched. In this thesis, a comparative life cycle analysis was performed on the alkaline and molten carbonate electrolyzer. Due to inaccurate inventory data for the molten carbonate electrolyzer, those results are excluded from the published thesis. The environmental performance of the alkaline electrolyzer technology was compared to that of the solid oxide and the polymer electrolyte membrane electrolyzers. The system boundaries were set as cradle to gate. Thereby, the life cycle steps included in the study are raw material extraction, electrolyzer manufacturing, hydrogen production, and transports in between these steps. The functional unit was chosen as 100 kg produced hydrogen gas. The results show that the polymer electrolyte membrane electrolyzer has the lowest environmental impact out of the compared technologies. It is also determined that the lifetime and the current density of the electrolyzers have significant impact on their environmental performance. Moreover, it is established that electricity for hydrogen production has the highest environmental impact out of the electrolyzers life cycle steps. Therefore, it is important to make sure that the electricity used for hydrogen production derives from renewable sources.<br>Vätgas har potential att spela en viktig roll som energibärare i framtiden med många användningsområden, såsom ett rent bränsle för transporter, uppvärmning, kraftförsörjning där elproduktion inte är lämpligt, med mera. Redan idag är vätgas ett viktigt inslag i flera industrier, där ibland raffinaderier och kemiska industrier. Det finns flera metoder för att producera vätgas, där reformering av naturgas är den största produktionsmetoden idag. I framtiden spås vätgasproduktion med elektrolys bli allt viktigare, då hållbara produktionsprocesser prioriteras allt mer. Idag används främst två elektrolysörtekniker, alkalisk och polymerelektrolyt. Utöver dessa är högtemperaturelektrolysörer också intressanta tekniker, där fastoxidelektrolysören är under utveckling och smältkarbonatelektrolysören är på forskningsstadium. I det här examensarbetet har en jämförande livscykelanalys utförts på alkalisk- och smältkarbonatelektrolysören. På grund av felaktiga indata för smältkarbonatelektrolysören har dessa resultat uteslutits från den publika rapporten. Miljöpåverkan från den alkaliska elektrolysören har sedan jämförts med miljöpåverkan från fastoxid- och polymerelektrolytelektrolysörerna. Systemgränserna sattes till vagga till grind. De livscykelsteg som inkluderats i studien är därmed råmaterialutvinning, elektrolysörtillverkning, vätgasproduktion och transporter mellan dessa steg. Den funktionella enheten valdes till 100 kg producerad vätgas.  Resultaten visar att polymerelektrolytteknologin har den lägsta miljöpåverkan utav de tekniker som jämförts. Resultaten påvisar också att livstiden och strömtätheten för de olika teknikerna har signifikant påverkan på teknikernas miljöpåverkan. Dessutom fastslås att elektriciteten för vätgasproduktion har högst miljöpåverkan utav de studerade livscykelstegen. Därför är det viktigt att elektriciteten som används för vätgasproduktionen kommer ifrån förnybara källor.
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Coetzee, Morné Pieter. "Upscaling of a sulphur dioxide depolarized electrolyzer / Coetzee, M.P." Thesis, North-West University, 2012. http://hdl.handle.net/10394/7001.

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In the last couple of years there has been a great need for finding alternative, cleaner burning fuel sources. This search has led to the development of various hydrogen technologies. The reason for this is that when burnt, hydrogen gas only forms water and oxygen as products. One of the methods used in the production of hydrogen gas is that of the electrolysis of sulphur dioxide which is facilitated by a sulphur dioxide depolarized electrolyzer. The electrolysis of sulphur dioxide has the advantage of requiring lower cell voltages in the electrolysis process when compared to the electrolysis of water. This type of electrolyzer unfortunately suffers from low hydrogen gas production volumes. It was thought that by linearly increasing the reactions active area of the electrolyzer, the production volumes can be increased. A linearly upscaled 100cm2 cell was designed by using computer aided design software, such as SolidWorks, Cambridge Engineering Selector, EES and ANSYS. The cell was then constructed and tested to determine the effects of linearly upscaling. The results of the 100cm2 cell were compared to the results of a similar 25cm2 cell and results obtained from the literature. The 100cm2 cell exhibited very poor performance when compared to the other cells. The 100cm2 cell showed lower hydrogen production volumes at higher energy inputs than the 25cm2 cell and an 86cm2 stack assembly. It was concluded that creating stack assemblies with cells with smaller active areas would be much more efficient than linearly upscaling the active area of the cells.<br>Thesis (M.Ing. (Mechanical Engineering))--North-West University, Potchefstroom Campus, 2012.
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Hýbl, Jiří. "Nové typy membrán pro elektrolyzér vodík - kyslík." Master's thesis, Vysoké učení technické v Brně. Fakulta elektrotechniky a komunikačních technologií, 2010. http://www.nusl.cz/ntk/nusl-218372.

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This work deals with the production of hydrogen and oxygen by electrolysis. Aims of this thesis are to measure different types of membranes and choose the best for use in elektrolyzer for hydrogen and oxygen production. Properties of membranes were tested in the laboratory electrolyzer in the short and long operation. The emerging gases from elektrolyzer were also tested on a gas chromatograph to determine the purity of produced hydrogen. At the same time are also tested different concentrations of KOH elektrolyte and the effect of concentrations on efficiency of electrolyzer.
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Yodwong, Burin. "Contribution to the development of a high-power low-voltage DC-DC converter for proton exchange membrane electrolyzer applications." Electronic Thesis or Diss., Université de Lorraine, 2022. http://www.theses.fr/2022LORR0064.

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Cette thèse de doctorat a été réalisée dans le cadre d’un accord de cotutelle entre l’Université de Lorraine, IUT de Longwy, laboratoire GREEN et Renewable Energy Research Centre (RERC), King Mongkut’s University of Technology North Bangkok, Thaïlande. Par ailleurs, cette thèse s’inscrit dans le cadre du programme de bourses Franco-Thaï 2019 soutenu par l’ambassade de France en Thaïlande et Campus France. L’objectif principal de cette thèse est de développer un convertisseur DC-DC dévolteur basse tension haute puissance et un algorithme de contrôle non linéaire pour des applications d’électrolyseurs PEM. Tout d’abord, les technologies d’électrolyseurs et les topologies de convertisseurs DC-DC pour des systèmes de production d’hydrogène reposant sur le processus d’électrolyse de l’eau ont été étudiées avec attention. De plus, une étude bibliographique des modèles d’électrolyseurs PEM a été réalisée pour analyser les comportements statiques et dynamiques de ces derniers. Dans ce travail, la technologie d’électrolyseur PEM a été considérée en raison de ses avantages principaux tels que sa densité de courant élevée, sa réponse rapide aux sollicitations dynamiques, et sa large plage de fonctionnement. De là, cette technologie est particulièrement bien adaptée pour être couplée avec des sources d’énergies renouvelables. Cependant, les électrolyseurs peuvent être vus comme des charges électrochimiques basse tension fort courant exigeant en conséquence un convertisseur DC-DC dévolteur adapté. Après avoir effectué une analyse bibliographique sur les convertisseurs DC-DC les plus utilisés et les topologies candidates pour cette application, un convertisseur buck entrelacé trois niveaux (communément appelé three-level interleaved buck converter (TLIBC)) a été choisi dû à ses caractéristiques principales. En effet, cette topologie est caractérisée par une ondulation de courant de sortie faible, une conversion en tension faible, et une disponibilité en cas de défaillances électriques. Dans un second temps, un émulateur d’électrolyseur PEM a été conçu et implémenté en s’appuyant sur les comportements statiques et dynamiques d’un électrolyseur PEM commercial. Cet émulateur a été utilisé avec le convertisseur buck entrelacé trois niveaux pour éviter toute condition de fonctionnement critique qui pourrait endommager un électrolyseur physique pendant les phases d’expérimentation. Enfin, pour assurer d’excellentes performances du système, un contrôle non-linéaire mode glissant (communément appelé sliding-mode control (SMC)) amélioré a été conçu pour le convertisseur étudié. Le choix de ce contrôleur est motivé par ses bénéfices en termes de réponse dynamique et robustesse contre les incertitudes de paramètres du système. Ensuite, le convertisseur piloté par le contrôle non-linéaire mode glissant a été testé en simulation et expérimentalement. Les résultats obtenus à la fois en simulation et en pratique ont démontré la robustesse du contrôleur proposé dans la gestion du courant de sortie (i.e. réglage du débit d’hydrogène) qui suit avec précision une référence donnée avec une faible ondulation de courant de sortie, tout en garantissant l’équilibre des tensions des deux condensateurs d’entrée en conditions de fonctionnements dynamiques et d’incertitudes des paramètres<br>This Ph.D. work has been carried out within the framework of a cotutelle agreement between the Group of Research in Electrical Engineering of Nancy (GREEN), Université de Lorraine, IUT de Longwy section, France, and Renewable Energy Research Centre (RERC), Thai French innovation institute, Faculty of technical education, King Mongkut's University of Technology North Bangkok, Thailand. Besides, this Ph.D. comes within the scope of the 2019 Franco-Thai Scholarship Program supported by the French Embassy in Thailand and Campus France. The major goal of this Ph.D. work is to develop a high-power low voltage step-down DC-DC converter and a non-linear control algorithm for PEM electrolyzer applications. First, the electrolyzer technologies and power electronics topologies for hydrogen production systems relying on water electrolysis process have been thoroughly studied. Besides, a literature review of PEM electrolyzer models has been carried out to investigate static and dynamic behaviors. In this work, PEM electrolyzer technology has been considered due to their main advantages such as high current densities, fast dynamic responses, and large partial load range. Hence, this technology is perfectly fit to be coupled with renewable energy sources. However, PEM electrolyzers are low-voltage high-current electrochemical loads requiring the use of a suitable step-down DC-DC converter. After reviewing the most used topologies and topologies candidates for this application, a three-level interleaved buck converter (TLIBC) has been chosen because of their main benefits. Indeed, the main features of the TLIBC are low output current ripple, low step-down conversion ratio gain, and availability in case of electrical failures. Second, a PEM electrolyzer emulator has been designed and implemented based on the static and dynamic behavior of a commercial PEM electrolyzer. This emulator has been used with the TLIBC to avoid critical operating conditions that may damage a real electrolyzer during experimental tests. Finally, to ensure excellent performance of the system, a non-linear improved sliding-mode control (SMC) has been designed for the TLIBC. The choice of this controller has been motivated by its major benefits such as fast dynamic response and robustness against parameters uncertainties. Then, the TLIBC driven by the improved SMC has been tested in simulation and experimentally. Both obtained simulation and experimental results have demonstrated the robustness of proposed control laws in managing the output inductor current (i.e., hydrogen flow rate) that precisely follows its reference with very low current ripple, while guaranteeing the balance of both input capacitors voltages with respect to the dynamic operating condition and uncertainty parameters
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Panda, Ronit Kumar. "Développement d'un simulateur d'électrolyse alcalin avec membrane polymère échangeuse d'anions." Electronic Thesis or Diss., Université Grenoble Alpes, 2024. http://www.theses.fr/2024GRALI041.

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Cette thèse décrit la modélisation des performances AEMWE (chap 1) et ses dégradations (chap 2). Les modèles sont développés dans le code MePHYSTO développé au CEA dans la plateforme Matlab/Simulink. Le modèle de performance a été développé grâce aux caractérisations électrochimiques réalisées au CEA au cours du projet. Les phénomènes électrochimiques essentiels sont bien capturés, notamment l'effet de concentration en KOH et l'effet de couverture de bulles, et les courbes de polarisation sont correctement simulées.Concernant les dégradations, ces travaux s'appuient sur les résultats expérimentaux obtenus au CEA au cours du projet. Les résultats expérimentaux ont apporté plusieurs idées : les dégradations comportent à la fois des parties réversibles et irréversibles qui évoluent différemment. En effet, les dégradations réversibles augmentent avec le temps tandis que les parties irréversibles diminuent. Nous avons supposé que la partie réversible provenait de la présence des bulles dans l'anode qui la dénoie partiellement. Concernant la partie irréversible, plusieurs phénomènes interviennent. Nous avons quantifié les différentes contributions de ces dégradations grâce au modèle électrochimique que nous avons développé et aux courbes de polarisation fournies. Dans un premier temps, la dégradation du catalyseur est quantifiée via l'estimation du facteur de rugosité au début des courbes de polarisation. Dans un deuxième temps, l’évolution de la surtension d’échange d’ions entre l'électrolyte et le ionomère est quantifiée en ajustant le modèle à l’aide des courbes de polarisation. Ensuite, les dégradations associées au transport de masse sont analysées en détail. Nous avons supposé qu'elles sont induites par la perte de mouillabilité qui augmente la présence des bulles à l'anode et réduit ainsi les performances. Ceci est cohérent avec l’augmentation des dégradations réversibles que nous associons à la présence des bulles. L'évolution de l'angle de contact du PTL qui caractérise cette perte de mouillabilité est calculée selon une approche originale. Nous développons une méthode basée sur des simulations de l'écoulement dans la géométrie réelle du PTL à l'aide d'images tomographiques 3D et du code GeoDict. Les propriétés d'écoulement (perméabilité et pression capillaire) et l'angle de contact sont extraits de ces simulations et sont utilisés dans le code MePHYSTO pour calculer les performances à différents moments du vieillissement avec une bonne précision<br>This report describes the modelling AEMWE performances (chap 1) and degradations (chap 2). The models are developed in the MePHYSTO code developed at CEA in the Matlab/Simulink platform. The performance model has been developed thanks to the electrochemical characterization performed at CEA during the project. The essential electrochemical phenomena are captured including KOH concentration effect and bubble coverage effect and the IV curves are correctly simulated.Regarding the degradation, the work is based on the experimental results obtained at CEA during the project. The experimental results provided several ideas: the degradations include both reversible and irreversible parts that evolve differently. Indeed, the reversible degradations increases with time while irreversible parts decreases. We assumed the reversible part comes from the anode bubble coverage. Regarding the irreversible part, several phenomena are involved. We quantified the different contributions of these degradations thanks to the electrochemical model we developed, and the IV curves provided. First, the catalyst degradation is quantified via the estimation of the roughness factor at the beginning of the IV curves. Secondly, the ion-exchange over-potential evolution is quantified by fitting the model using the IV curves. Then, the degradations associated to the mass transport are analyzed in detail. We assumed that they are induced by the loss of wettability that increases the anode bubble coverage and thus, reduces the performances. This is coherent with the increase of the reversible degradations we associate to the bubble coverage. The evolution of the sinter contact angle that characterized this loss of wettability is calculated using an original approach. We develop a method based on simulations of the flow in the real geometry of the sinter using tomographic 3D picture and the GeoDict code. The flow properties (permeability and capillary pressure) and the contact angle are extracted from these simulations and are used in the MePHYSTO code to calculate the performances at different aged times with a good accuracy
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Petrik, Leslie F. "Pt Nanophase supported catalysts and electrode systems for water electrolysis." Thesis, University of the Western Cape, 2008. http://hdl.handle.net/11394/2743.

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Doctor Scientiae - DSc<br>In this study novel composite electrodes were developed, in which the catalytic components were deposited in nanoparticulate form. The efficiency of the nanophase catalysts and membrane electrodes were tested in an important electrocatalytic process, namely hydrogen production by water electrolysis, for renewable energy systems. The activity of electrocatalytic nanostructured electrodes for hydrogen production by water electrolysis were compared with that of more conventional electrodes. Development of the methodology of preparing nanophase materials in a rapid, efficient and simple manner was investigated for potential application at industrial scale. Comparisons with industry standards were performed and electrodes with incorporated nanophases were characterized and evaluated for activity and durability.<br>South Africa
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Dedigama, I. U. "Diagnostics and modeling of polymer electrolyte membrane water electrolysers." Thesis, University College London (University of London), 2014. http://discovery.ucl.ac.uk/1426127/.

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Proton exchange membrane water electrolyser (PEMWE) technology can be used to produce hydrogen from renewable energy sources; the technology is therefore a promising component in future national power and transportation fuel systems. The main challenges faced by the technology include prohibitive materials costs, maximising efficiency and ensuring suitable longevity. Therefore, research is needed to understand the internal operation of the systems so that cell design can be optimised to obtain maximum performance and longevity. PEMWE is a low temperature electrolysis system that consists of cell components such as end plates, current collectors, bipolar plates, gas diffusion layers (GDLs) and membrane electrode assemblies (MEAs). Cell performance is strongly reliant on the materials and designs of each of the components. Three cell designs were used to study different aspects of PEMWE operation: commercial cell, optically transparent cell and combined optical and current mapping cell. Polarisation measurements performed on a commercially available lab-scale test cell at ambient conditions illustrated an increase in mass transport limitations with increasing water flow rate which was confirmed using electrochemical impedance spectroscopy (EIS) measurements. A transparent cell was constructed to allow optical access to the flow channels. Measurements made on the cell showed a transition from bubbly to slug flow that affects mass transport limitations and consequently the electrochemical performance. Thermal imaging measurements supported a mass and energy balance of the system. Finally, a combined transparent and current mapping cell was constructed using PCB technology that indicated higher current densities closer to the exit of the channel. Optical measurements showed that this increase in current was associated with larger bubbles and a transition to slug flow which led to enhanced mass transport of water to the electrode surface. A model developed for the system showed that the cell potential is dominated by the anode activation overpotential. Experimental data obtained at similar conditions with the commercially available lab-scale test cell agreed well with the model and the fitted parameters were in close proximity with values published in literature.
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Guenot, Benoit. "Etude de matériaux catalytiques pour la conversion électrochimique de l'énergie Clean hydrogen generation from the electrocatalytic oxidation of methanol inside a proton exchange membrane electrolysis cell (PEMEC): effect of methanol concentration and working temperature Electrochemical reforming of Dimethoxymethane in a Proton Exchange Membrane Electrolysis Cell: a way to generate clean hydrogen for low temperature fuel cells." Thesis, Montpellier, Ecole nationale supérieure de chimie, 2017. http://www.theses.fr/2017ENCM0004.

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L’hydrogène est un vecteur énergétique prometteur réalisant une très bonne synergie avec l’exploitation des sources d’énergie intermittentes telles que le solaire ou l’éolien. Le développement de ses moyens de production et de conversion électrochimique représente un enjeu majeur dans le contexte de transition énergétique dans lequel nous vivons aujourd’hui. Les piles à combustible et les électrolyseurs utilisant la technologie PEM (Membrane Echangeuse de Protons) sont des systèmes électrochimiques de conversion de l’énergie matures tandis que les systèmes réversibles capables de remplir ces deux fonctions – les piles à combustible régénératrices unitaires – sont encore à l’état de développement. Leur principal verrou technologique est la conception d’une électrode bifonctionnelle à oxygène. Les matériaux catalytiques mis en œuvre dans ces systèmes sont principalement des métaux nobles et il convient d’en réduire autant que possible la charge massique dans les électrodes pour diminuer le coût des systèmes. Trois aspects complémentaires ont été développés lors de ces travaux de thèse. D’une part, des oxydes d’iridium et de ruthénium ont été élaborés par voie hydrothermale afin de catalyser la génération d’oxygène en fonctionnement électrolyseur. D’autre part, des catalyseurs à base de platine supportés sur des matériaux non carbonés, en particulier le nitrure de titane, ont été synthétisés par des voies colloïdales, afin de catalyser la réduction de l’oxygène en fonctionnement pile à combustible. L’association de ces matériaux est une première étape vers la conception d’une électrode bifonctionnelle à oxygène. Le troisième point se concentre sur la production de l’hydrogène et propose une alternative à l’oxydation de l’eau. L’oxydation électrochimique de composés organiques tels que le méthanol ou le diméthoxyméthane à l’aide de catalyseurs à base de platine et de ruthénium métallique permet la production d’hydrogène de grande pureté avec une consommation d’énergie électrique moindre par rapport à l’électrolyse de l’eau<br>Hydrogen is a promising energy vector, particularly for energy storage from intermittent energy sources such as solar or wind. The development of its production methods and its electrochemical conversion represents a major challenge in the context of energy transition in which we live nowadays. Fuel cells and electrolyzers using PEM technology (Proton Exchange Membrane) are mature electrochemical energy conversion systems, while reversible systems capable of performing both functions – unitized regenerative fuel cells – are still in the early stage of development. Their main technological bottleneck is the design of a bifunctional oxygen electrode. The catalytic materials used in these systems are mainly noble metals and it is necessary to reduce as much as possible their loading in the electrodes to decrease the system cost. Three complementary aspects have been developed during this thesis. On the one hand, iridium and ruthenium oxides have been prepared by hydrothermal treatment in order to catalyze the oxygen evolution under electrolyzer operation. On the other hand, platinum-based catalysts supported on non-carbonaceous materials, especially titanium nitride, have been synthesized by colloidal routes, in order to catalyze the oxygen reduction under fuel cell operation. The combination of these materials is the first step towards the design of a bifunctional oxygen electrode. The third topic focuses on the production of hydrogen and proposes an alternative to the oxidation of water. The electrochemical oxidation of organic compounds such as methanol or dimethoxymethane using platinum and ruthenium based catalysts allows producing clean hydrogen with a lower electrical energy consumption compared to the electrolysis of water
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Books on the topic "Membrane electrolyzer"

1

Li, Qingfeng, David Aili, Hans Aage Hjuler, and Jens Oluf Jensen, eds. High Temperature Polymer Electrolyte Membrane Fuel Cells. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-17082-4.

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1963-, Esposito Richard, and Conti Antonio 1962-, eds. Polymer electrolyte membrane fuel cells and electrocatalysts. Nova Science Publishers, 2009.

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Inamuddin, Dr, Ali Mohammad, and Abdullah M. Asiri, eds. Organic-Inorganic Composite Polymer Electrolyte Membranes. Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-52739-0.

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Tatsuhiro, Okada, Saitō Morihiro, and Hayamizu Kikuko, eds. Perfluorinated polymer electrolyte membranes for fuel cells. Nova Science Publishers, 2008.

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N, Büchi Felix, Inaba Minoru 1961-, and Schmidt Thomas J, eds. Polymer electrolyte fuel cell durability. Springer, 2009.

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Thiele, Simon. Tomographic reconstruction of polymer electrolyte membrane fuel cell cathode catalyst layers. s.n.], 2013.

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Kúš, Peter. Thin-Film Catalysts for Proton Exchange Membrane Water Electrolyzers and Unitized Regenerative Fuel Cells. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-20859-2.

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Vandenborre, H. A pilot scale (100kw) water electrolysis plant based on inorganic-membrane-electrolyte technology. Commission of the European Communities, 1986.

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Eiichi, Torikai, and United States. National Aeronautics and Space Administration., eds. Production of an ion-exchange membrane-catalytic electrode bonded material for electrolytic cells. National Aeronautics and Space Administration, 1986.

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University), International Summer School on Advanced Studies of Polymer Electrolyte Fuel Cells (4th 2011 Yokohama National. Advanced studies of polymer electrolyte fuel cells: 4th International Summer School : Yokohama National University, September 5th-9th, 2011. Verlag der Technischen Universität Graz, 2011.

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Book chapters on the topic "Membrane electrolyzer"

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Kramer, W., and B. Lüke. "Hoechst-Uhde Single Element Membrane Electrolyzer: Concept—Experiences—Applications." In Modern Chlor-Alkali Technology. Springer Netherlands, 1990. http://dx.doi.org/10.1007/978-94-009-1137-6_20.

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Koundi, M., H. EL Fadil, Z. EL Idrissi, et al. "DC/DC Boost Converter-Based Emulation of a Proton Exchange Membrane Electrolyzer." In Lecture Notes in Electrical Engineering. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-97-0126-1_41.

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Zhu, Xiaohong, Biao Liu, Jugang Ma, et al. "Study of In-Situ Visualization and Two-Phase Flow Characteristics in Proton Exchange Membrane Electrolyzer." In Springer Proceedings in Physics. Springer Nature Singapore, 2024. http://dx.doi.org/10.1007/978-981-99-8585-2_19.

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Laslop, D., and E. Staude. "Influence of Surfactants on the Transport Behavior of Electrolytes Through Synthetic Membranes." In Membranes and Membrane Processes. Springer US, 1986. http://dx.doi.org/10.1007/978-1-4899-2019-5_22.

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Arico, Antonino Salvatore. "Electrolyzers." In Encyclopedia of Membranes. Springer Berlin Heidelberg, 2016. http://dx.doi.org/10.1007/978-3-662-44324-8_203.

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Arico, Antonino Salvatore. "Electrolyzers." In Encyclopedia of Membranes. Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-40872-4_203-2.

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Guan, Xiaofei, Uday B. Pal, Srikanth Gopalan, and Adam C. Powell. "Electrochemical Characterization and Modeling of a Solid Oxide Membrane-Based Electrolyzer for Production of Magnesium and Oxygen." In Celebrating the Megascale. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-48234-7_40.

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Guan, Xiaofei, Uday B. Pal, Srikanth Gopalan, and Adam C. Powell. "Electrochemical Characterization and Modeling of a Solid Oxide Membrane-Based Electrolyzer for Production of Magnesium and Oxygen." In Celebrating the Megascale. John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118889657.ch40.

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Talukdar, Kamaljyoti. "Modeling of Solar Photovoltaic-Assisted Electrolyzer-Polymer Electrolyte Membrane Fuel Cell to Charge Nissan Leaf Battery of Lithium Ion Type of Electric Vehicle." In Proceedings of the 7th International Conference on Advances in Energy Research. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5955-6_26.

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Göbek, Arzu, and Ayşe Bayrakçeken Yurtcan. "Polymer Electrolyte Membrane Fuel Cell (PEMFC) Membranes." In Prospects of Hydrogen Fueled Power Generation. River Publishers, 2024. http://dx.doi.org/10.1201/9781032656212-2.

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Conference papers on the topic "Membrane electrolyzer"

1

Hussnain, Usama, Nurul Aini Bani, Mohd Nabil Muhtazaruddin, and Firdaus Muhammad-Sukki. "Hydrogen Production Rate of Temperature Controlled Proton Exchange Membrane Electrolyzer." In 2024 IEEE 12th Region 10 Humanitarian Technology Conference (R10-HTC). IEEE, 2024. https://doi.org/10.1109/r10-htc59322.2024.10778723.

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Igwe, Chijindu Ikechukwu, Chinonso Hubert Achebe, Arinze Everest Chinweze, and Jeremiah Lekwuwa Chukwuneke. "Development and Evaluation of an Alkaline Electrolyzer for Production of Hydrogen and Electrical Energy in a Fuel Cell." In Africa International Conference on Clean Energy and Energy Storage. Trans Tech Publications Ltd, 2025. https://doi.org/10.4028/p-kd6hw7.

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In this study, a single-cell, zero-gap, unipolar alkaline water electrolyzer which operates on a 30 wt.% KOH electrolyte solution was developed for production of hydrogen. Suitable material properties such as density, toughness, electrical conductivity, and corrosion resistivity were evaluated in Ansys Granta 2019 with the aid of material property charts; and thermal and stress simulations of the modelled components performed using Autodesk Inventor Nastran 2019. A DC power source supplied voltages below 3.0 V across the nickel electrodes, maintaining an operating temperature of 50 °C, and operating pressure at 0.1 MPa. The electrolytic process produced hydrogen and oxygen gases at the electrodes, and the membrane performed the gas separation. Polytetrafluoroethylene plastic was experimentally found to be a superior and more suitable material for the electrolyzer endplates and spacers to polypropylene plastic. Polypropylene nonwoven geotextile fabric was also found to be a low-cost and efficient membrane material, against Zirfon Perl UTP 500 membrane which is an efficient but expensive industrial membrane; polyester geotextile fabric got corroded after about 24 hours of good service. The optimal performance of the electrolyzer cell was obtained at a cell voltage of 2.2 V and a current of 1.30 A, while producing 14 ml of hydrogen gas per minute. This performance gave an electrolysis efficiency of 55.6%, an energy efficiency of 67.3%, and a hydrogen production efficiency of 75.4%. The produced hydrogen and oxygen gases generated electrical energy in a reversible PEM fuel cell device which powered a 0.2 W DC electric motor for a minute.
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Hinds, Gareth. "On the Choice of Applied Potential in Ex Situ Testing of Bipolar Plate Materials." In CONFERENCE 2023. AMPP, 2023. https://doi.org/10.5006/c2023-19547.

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Abstract Ex situ testing of candidate bipolar plate materials for polymer electrolyte membrane (PEM) fuel cells and electrolyzers typically involves electrochemical polarization of the specimen in a three electrode cell. Relatively high potentials of between 1.5 V and 2.0 V vs RHE are commonly applied during such tests due to the widely held assumption that, during both start-up/shutdown and normal operation, the bipolar plate experiences the same potential as that of the nearest electrode. Here we present experimental and modelling evidence that the bipolar plate in an operating PEM fuel cell or electrolyzer actually sits at its natural open circuit potential due to the high resistivity of the aqueous phase in such devices, which effectively shields the material from the elevated potential at the electrode. The implications for reliable ex situ testing are discussed.
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Rama, Rashmi, Pratyasa Bhui, and Animesh Kumar Sahoo. "Detailed Phasor Modelling of Grid Forming Proton Exchange Membrane (PEM) Electrolyzer Load." In 2024 23rd National Power Systems Conference (NPSC). IEEE, 2024. https://doi.org/10.1109/npsc61626.2024.10987206.

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Ding, Liwei, Hongkun Lv, Kang Zhang, et al. "Simulation and efficiency analysis of hydrogen production in proton exchange membrane electrolyzer system." In 2024 6th International Conference on Energy Systems and Electrical Power (ICESEP). IEEE, 2024. http://dx.doi.org/10.1109/icesep62218.2024.10651767.

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Chen, Xinhe, Radhakrishna Tumbalam-Gooty, Darice Guittet, Bernard Knueven, John D. Siirola, and Alexander W. Dowling. "Conceptual Design of Integrated Energy Systems with Market Interaction Surrogate Models." In Foundations of Computer-Aided Process Design. PSE Press, 2024. http://dx.doi.org/10.69997/sct.168255.

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Most integrated energy system (IES) optimization frameworks employ the price-taker approximation, which ignores important interactions with the market and can result in overestimated economic values. In this work, we propose a machine learning surrogate-assisted optimization framework to quantify IES/market interactions and thus go beyond price-taker. We use time series clustering to generate representative IES operation profiles for the optimization problem and use machine learning surrogate models to predict the IES/market interaction. We quantify the accuracy of the time series clustering and surrogate models in a case study to optimally retrofit a nuclear power plant with a polymer electrolyte membrane electrolyzer to co-produce electricity and hydrogen.
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Pendola, Francesco, Guy Wanlongo Ndiwulu, Virginie Kluyskens, Emmanuel De Jaeger, and Federico Silvestro. "Impact of the Connection of a 100 MW Proton Exchange Membrane Electrolyzer on Rotor Angle Transient Stability." In 2024 IEEE International Conference on Environment and Electrical Engineering and 2024 IEEE Industrial and Commercial Power Systems Europe (EEEIC / I&CPS Europe). IEEE, 2024. http://dx.doi.org/10.1109/eeeic/icpseurope61470.2024.10751002.

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Arsalis, Alexandros, Panos Papanastasiou, and George E. Georghiou. "Mathematical Modeling of an Anion Exchange Membrane Electrolyzer for Integration in a Novel Solar Photovoltaic-Battery-Green Hydrogen Nanogrid." In 2024 3rd International Conference on Energy Transition in the Mediterranean Area (SyNERGY MED). IEEE, 2024. https://doi.org/10.1109/synergymed62435.2024.10799294.

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Arsalis, Alexandros, Fanourios Kourougianni, Andreas V. Olympios, Panos Papanastasiou, George E. Georghiou, and Charalampos Konstantinou. "Design and Modeling of a Proton Exchange Membrane Electrolyzer-Compressed Hydrogen Storage-Proton Exchange Membrane Fuel Cell Green Hydrogen Subsystem for Integration to a Solar Photovoltaic-Battery Nanogrid." In 2024 3rd International Conference on Energy Transition in the Mediterranean Area (SyNERGY MED). IEEE, 2024. https://doi.org/10.1109/synergymed62435.2024.10799442.

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Kassim, Zamzila, Siti Nur Amira Shaffee, Faris Akmal Aminuddin, et al. "Improving Green Hydrogen Production through Proton Exchange Membrane Electrolyzer Simulation Study." In GOTECH. SPE, 2024. http://dx.doi.org/10.2118/219292-ms.

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Abstract PETRONAS has embarked upon hydrogen production technology development, such as Proton Exchange Membrane (PEM) electrolyzers, to achieve an ambitious target of net-zero carbon emissions by 2050. This initiative aligns with PETRONAS and SLB’s aspiration to offer sustainable solutions in the energy business. In this journey, PETRONAS collaborated with SLB (vendor) in developing process simulation models and conducting analysis of the results/findings. PEM electrolyzers are considered among the most favorable technologies for hydrogen generation. PEM electrolyzers already commercially available and present many advantages over other available water electrolysis technologies, including simplicity, higher current densities, solid electrolytes, and higher working pressures. They are expected to be a future alternative to conventional alkaline water electrolyzers in low-temperature applications. This study focuses on PEM electrolyzers for hydrogen (H2) production by employing a comprehensive approach to investigate the behavior and performance of PEM electrolyzers through rigorous steady-state simulation. The aim is to validate the electrolyzer model in the process simulator Symmetry-iCON (SLB’s proprietary software), evaluate operational parameters, and predict system behavior under various operating conditions. The steady-state simulation results provide critical insights into PEM behavior and performance dynamics. Additionally, the findings emphasize the significant influence of operating temperature on H2 production rates and power consumption efficiency. An increase in the electrolyzer's operating temperature has been shown to increase H2 production rates while concurrently reducing power consumption per unit of H2 production. Furthermore, evaluating a decay rate of 4mA/cm2-h highlighted the impact of membrane deterioration over time, leading to a reduction in H2 production and increased power consumption per unit of H2. Remarkably accuracy with error rate below 1%, reinforcing the reliability of predictions. The study's significance lies in the key role of steady-state simulation and analysis for predicting system stability, optimizing efficiency, and ensuring consistent hydrogen production. Understanding the correlation between operating temperature and H2 production rate enables the selection of optimal conditions for improved efficiency. Additionally, the decay rates assist in predicting long-term performance trends, facilitating maintenance decisions of PEM membranes to sustain optimal electrolyzer performance. The key findings from this study were further used and integrated for scaling up the model into larger-scale systems, providing comprehensive insights into the broader implications of the electrolyzer's performance. The sensitivity analysis conducted further enriched the understanding of the electrolyzer's behavior under various operational parameters, offering crucial data for real-world applications. In summary, this study not only reveals the behavior of PEM electrolyzers concerning operational parameters but also emphasizes their integration into larger-scale systems. The findings underscore the necessity of steady-state simulation in optimizing performance and advancing sustainable hydrogen production, aligning with PETRONAS's commitment to pioneering sustainable technology in achieving net-zero carbon emissions.
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Reports on the topic "Membrane electrolyzer"

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Hamdan, Monjid. PEM Electrolyzer Incorporating an Advanced Low-Cost Membrane. Office of Scientific and Technical Information (OSTI), 2013. http://dx.doi.org/10.2172/1091385.

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Hobbs, D., H. Hector Colon-Mercado, and M. Mark Elvington. FY08 MEMBRANE CHARACTERIZATION REPORT FOR HYBRID SULFUR ELECTROLYZER. Office of Scientific and Technical Information (OSTI), 2008. http://dx.doi.org/10.2172/937206.

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Zhang, Feng-Yuan, Matthew Mench, David Cullen, et al. Developing novel electrodes with ultralow catalyst loading for high-efficiency hydrogen production in proton exchange membrane electrolyzer cells. Office of Scientific and Technical Information (OSTI), 2021. http://dx.doi.org/10.2172/1884815.

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Kim, Yu, Eun Park, Jannasch Patric, et al. Aryl Ether-free Polymer Electrolytes for Anion Exchange Membrane Water Electrolysers and Other Electrochemical Devices. Office of Scientific and Technical Information (OSTI), 2024. http://dx.doi.org/10.2172/2377942.

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Jamieson, Matthew. Polymer Electrolyte Membrane (PEM) operations. Office of Scientific and Technical Information (OSTI), 2023. http://dx.doi.org/10.2172/1922943.

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Mukundan, Rangachary. Durability of Polymer Electrolyte Membrane Fuel Cells. Office of Scientific and Technical Information (OSTI), 2018. http://dx.doi.org/10.2172/1425753.

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Kim, Yu. Polymer Electrolyte Membrane Fuel Cell Electrode Compositions. Office of Scientific and Technical Information (OSTI), 2021. http://dx.doi.org/10.2172/1756777.

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Mayyas, Ahmad T., Mark F. Ruth, Bryan S. Pivovar, Guido Bender, and Keith B. Wipke. Manufacturing Cost Analysis for Proton Exchange Membrane Water Electrolyzers. Office of Scientific and Technical Information (OSTI), 2019. http://dx.doi.org/10.2172/1557965.

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Badgett, Alex, Joe Brauch, Amogh Thatte, et al. Updated Manufactured Cost Analysis for Proton Exchange Membrane Water Electrolyzers. Office of Scientific and Technical Information (OSTI), 2024. http://dx.doi.org/10.2172/2311140.

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Iyer, Rakesh, Jarod Kelly, and Amgad Elgowainy. Electrolyzers for Hydrogen Production: Solid Oxide, Alkaline, and Proton Exchange Membrane. Office of Scientific and Technical Information (OSTI), 2022. http://dx.doi.org/10.2172/1894304.

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