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Journal articles on the topic 'Anion exchange ionomer (AEI)'

Author: Grafiati

Published: 8 June 2024

Last updated: 31 July 2025

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1

Maumau, Thandiwe Rebecca, Nobanathi Wendy Maxakato, and Phumlani Fortune Msomi. "The Development of Anion Exchange Ionomer for Electrocatalysts in Application of Anion Exchange Membrane Fuel Cells." ECS Meeting Abstracts MA2022-02, no. 43 (2022): 1613. http://dx.doi.org/10.1149/ma2022-02431613mtgabs.

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Anion exchange membrane fuel cells (AEMFCs) are known to be able to address the use of expensive platinum catalyst by employing non-PGMs (Platinum Group Metal) metal catalysts, affordable ionomers, and greater fuel flexibility. All that provides AEMFCs with advantages over PEMFCs. However, AEMFCs have not been reported to achieve high current density as desired at fault by the lack of understanding of ionomer-catalyst interaction. For stable operation of AEM-based devices, water sorption and swelling of the thin anion exchange ionomer (AEI) layer are coupled to its catalyst binding ability. Un

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2

Nallayagari, Ashwini Reddy, Frédéric Murphy, Maria Luisa Di Vona, and Elena Baranova. "Investigation of Electrocatalyst and Ionomer Interaction in Anion Exchange Membrane Water Electrolysis." ECS Meeting Abstracts MA2023-02, no. 42 (2023): 2067. http://dx.doi.org/10.1149/ma2023-02422067mtgabs.

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Anion exchange membrane water electrolysis (AEMWE) is a type of electrolysis that involves the use of an anion exchange membrane (AEM) to separate the anode and cathode compartments. During the electrolysis process, water is split into hydrogen gas (H2) at the cathode and oxygen gas (O2) at the anode. AEMWE is an emerging technology that has the potential to play a significant role in the production of green hydrogen, which is a promising energy carrier for a variety of applications, including fuel cells and transportation. One of the benefits of AEMWE is that it can be used with a variety of

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3

Kwen, Jiyun, Juan Herranz, and Thomas J. Schmidt. "Forward-Bias 3D-Junction Bipolar Membranes for Electrochemical CO₂ Reduction to CO." ECS Meeting Abstracts MA2023-02, no. 48 (2023): 2438. http://dx.doi.org/10.1149/ma2023-02482438mtgabs.

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The ongoing, rapid increase in atmospheric CO2 concentration has led to a growing interest in the electrochemical reduction of CO2 to value-added products like CO. To attain high current densities, the latter reaction is often performed using an anion exchange membrane(AEM) electrolyte that is well known to operate through the transport of (bi)carbonate ions from cathode to anode. This can in turn result in a CO2 pumping effect that decreases the device’s net CO2-consumption, and that can be prevented by using a bipolar membrane in a so-called forward-bias configuration (i.e., with the anion v

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4

Hyun, Jonghyun, and Hee-Tak Kim. "Ionomer Distribution Strategy of Anion Exchange Membrane Fuel Cell Catalyst Layer in Terms of Interaction between Catalyst Slurry Components." ECS Meeting Abstracts MA2022-01, no. 35 (2022): 1414. http://dx.doi.org/10.1149/ma2022-01351414mtgabs.

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Anion exchange membrane fuel cells (AEMFCs) have been intensively studied in recent years to replace proton exchange membrane fuel cells (PEMFCs). The acid-to-alkali transitions have the potential to lower overall system costs because it allows the non-precious metal catalysts and inexpensive metal stack hardware. Significant strides have been made in materials science in the last few decades, particularly the development of high IEC-containing anion exchange membrane (AEM) and ionomer (AEI) possessing high OH- conductivity, enabling comparable cell performance to that of PEMFC. In addition, t

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5

Leonard, Daniel, Michelle Lehmann, Ivana Matanovic, Cy Fujimoto, Tomonori Saito, and Yu Seung Kim. "Fundamental Insight into Phenyl-Free Polynorbornene Ionomers Enables High Performance Anion Exchange Membrane Fuel Cells." ECS Meeting Abstracts MA2023-01, no. 38 (2023): 2254. http://dx.doi.org/10.1149/ma2023-01382254mtgabs.

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Anion exchange membrane fuel cells (AEMFCs) are seen as a possible successor to proton exchange membrane fuel cell technologies. A major motivation behind AEMFC development is the potential to use less costly materials, such as non-platinum group metal catalysts, thus reducing the stack cost. Anion exchange ionomers (AEIs) are polymers that facilitate ion transport in the catalyst layer play and a critical role in the performance of fuel cells. In fact, cell performance is profoundly affected by fundamental interactions between the catalyst surface and the AEI. Two such interactions are of par

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6

Turtayeva, Zarina, Feina Xu, Régis Peignier, Alain Celzard, and Gael Maranzana. "Optimization of Ionomer Content in Membrane Electrode Assemblies and Its Impact on the Performance in Anion Exchange Membrane Fuel Cells." ECS Meeting Abstracts MA2022-02, no. 43 (2022): 1624. http://dx.doi.org/10.1149/ma2022-02431624mtgabs.

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Anion exchange membrane fuel cells (AEMFCs) have recently attracted significant attention as low-cost alternative fuel cells to traditional proton exchange membrane fuel cells due to the possible use of platinum-group metal-free electrocatalysts [1]. Over the past decade, new materials dedicated to the alkaline medium, such as anion exchange membranes (AEMs) and anion exchange ionomers (AEIs), have been developed and studied in AEMFCs [2, 3]. However, only a few AEMs and AEIs are commercially available, and there are not ready to use catalyst coated membranes (CCMs) and/or gas diffusion electr

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7

Reddy, Nallayagari Ashwini. "Novel Metal-Free Composite Electrodes with Carbon Quantum Dots and Anion-Conducting Ionomers for the Oxygen Reduction Reaction." ECS Meeting Abstracts MA2022-02, no. 57 (2022): 2172. http://dx.doi.org/10.1149/ma2022-02572172mtgabs.

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The oxygen reduction reaction (ORR) is one of the bottlenecks in many electrochemical applications and plays an important role in commercial fuel cell systems. Platinum is highly used as a catalyzer especially in proton exchange membrane fuel cells. Given its rarity and cost, platinum, is not a viable choice as a catalyst, so there is a need to shift to alternative materials such as a metal-free catalyst possible in anion exchange membrane fuel cells. There were several theoretical and experimental studies to address this issue and a direction toward metal-free catalysts is of great interest.

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8

Vacandio, Florence, Philippe Knauth, and Suanto Syahputra. "Catalytic Electrodes for the Oxygen Reduction Reaction Based on Co-Doped Carbon Quantum Dots and Anion Exchange Ionomer." ECS Meeting Abstracts MA2024-02, no. 56 (2024): 3757. https://doi.org/10.1149/ma2024-02563757mtgabs.

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The sluggish kinetics of the oxygen reduction reaction (ORR), more than six orders of magnitude slower than the hydrogen oxidation reaction in acidic conditions, is a major concern for various energy storage and conversion devices, including metal air batteries and fuel cells. The exceptionally high O––O bond energy (~500 kJ/mol) requires generally the use of noble-metal electrocatalysts, including platinum and palladium, for the four-electron reduction in acidic conditions. The ORR is however faster in alkaline medium and non-noble electrocatalysts are applicable, including doped carbon mater

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Eriksson, Björn, Pietro Giovanni Santori, Nicolas Bibent, Frederic Lecoeur, Marc Dupont, and Frederic Jaouen. "Shedding Light on Water Management during Operation of AEMFC with Humidity Sensors." ECS Meeting Abstracts MA2022-01, no. 35 (2022): 1462. http://dx.doi.org/10.1149/ma2022-01351462mtgabs.

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The performance of anion exchange membrane fuel cells (AEMFC) has dramatically progressed in the past few years, with initial power performance matching, if not exceeding, those of proton exchange membrane fuel cells (PEMFC). The remaining challenges are i) the replacement of platinum-group-metal catalysts by catalysts based on Earth-abundant elements, ii) improved durability, and iii) the carbonatation issue when the cathode is fed with natural air. Compared to PEMFCs, the water management of AEMFC is more challenging, due to higher flux of water transported from one electrode to the other fo

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10

Marrocchi, Assunta, Elisa Cerza, Suhas Chandrasekaran, et al. "Hydrochar from Pine Needles as a Green Alternative for Catalytic Electrodes in Energy Applications." Molecules 29, no. 14 (2024): 3286. http://dx.doi.org/10.3390/molecules29143286.

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Hydrothermal carbonization (HTC) serves as a sustainable method to transform pine needle waste into nitrogen-doped (N-doped) hydrochars. The primary focus is on evaluating these hydrochars as catalytic electrodes for the oxygen reduction reaction (ORR) and carbon dioxide reduction reaction (CO2RR), which are pivotal processes with significant environmental implications. Hydrochars were synthesized by varying the parameters such as nitrogen loading, temperature, and residence time. These materials were then thoroughly characterized using diverse analytical techniques, including elemental analys

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11

Tricker, Andrew, Tugrul Ertugrul, Jason Keonhag Lee, et al. "(Invited) Pathways Toward Efficient and Durable AEM Water Electrolyzers." ECS Meeting Abstracts MA2024-02, no. 45 (2024): 3152. https://doi.org/10.1149/ma2024-02453152mtgabs.

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Green hydrogen will play a key role in decarbonization efforts, especially for heavy industries.[1] Durable, efficient, and low-cost electrolyzers are critical to realize economical and green hydrogen production. Anion exchange membrane water electrolyzer (AEMWE) is an emerging technology that combines the benefits of low components cost of conventional alkaline electrolyzers and the high efficiency of proton-exchange membrane (PEM) electrolyzers.[2] Although promising, a significant hurdle to commercial deployment of AEMWEs is the durability under industrially relevant conditions. Here, we de

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12

Viviani, Marco, Dennis Rusitov, Rusudan Sulaberidze, et al. "Hydrocarbon Proton and Anion Exchange Polymers for Water Electrolysis Applications." ECS Meeting Abstracts MA2024-02, no. 43 (2024): 2878. https://doi.org/10.1149/ma2024-02432878mtgabs.

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Renewable energy and water electrolysis (WE) are deemed to be the pillars over which the incoming green hydrogen era and energy transition will stand. Water electrolysis can undergo in both acidic and alkaline conditions. In modern times, solid polymer electrolyte WE has attracted particular interest, due to the advantage of a compact design combined with the possibility to operate at higher pressure and temperatures even using pure water. Still to date, the most used membranes in PEMWE are poly(perfluorosulfonic) acids (PFSAs) (e.g., Nafion™) due to their mechanical strength, strong chemical

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13

Varcoe, John, Rachida Bance-Souahli, Arup Chakraborty, et al. "The Latest Developments in Radiation-Grafted Anion-Exchange Polymer Electrolytes for Low Temperature Electrochemical Systems." ECS Meeting Abstracts MA2022-01, no. 35 (2022): 1443. http://dx.doi.org/10.1149/ma2022-01351443mtgabs.

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Anion-exchange membranes (AEM) are being developed for use in electrochemical technologies including fuel cells (AEMFC),water electrolysis (AEMWE for green hydrogen), electrolysers for CO2 reduction (CO2RR), and reverse electrodialysis (RED). Radiation-grafted AEMs (RG-AEM) represent a promising class of AEM that can exhibit high conductivities (OH- conductivities of > 200 mS cm-1 at temperatures above 60 °C) and favourable in situ water transport characteristics). Hence, RG-AEMs have shown significant promise when tested in AEMFCs alongside powdered radiation-grafted anion-exchange ionomer

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14

Osmieri, Luigi, Wilton Kort-Kamp, Haoran Yu, et al. "Nickel Oxide-Aerogel Electrocatalysts for Oxygen Evolution Reaction in Alkaline Media: Experimental Approaches and Modeling-Assisted Strategies for Improving Performance and Durability." ECS Meeting Abstracts MA2023-02, no. 42 (2023): 2149. http://dx.doi.org/10.1149/ma2023-02422149mtgabs.

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Anion exchange membrane water electrolyzers (AEMWEs) represent an attractive technology for producing “green” hydrogen that enables operation on pure water using platinum group metal (PGM)-free electrocatalysts at both anode and cathode. Also, AEMWEs do not require the use of highly concentrated and corrosive alkaline electrolytes and PGM-based catalysts, which are the major drawbacks of the incumbent low-temperature liquid-alkaline and proton exchange membrane electrolyzers, respectively.1,2 In this context, the development of PGM-free electrocatalysts for oxygen evolution reaction (OER) in a

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15

Ferriday, Thomas B., Sampathkumar Suhas Nuggehalli, Mounir Driss Mensi, Peter Hugh Middleton, Herle Jan Van, and Moahn Lal Kolhe. "Tuning Stainless Steel Oxide Layers through Potential Cycling─AEM Water Electrolysis Free of Critical Raw Materials." ACS Applied Materials & Interfaces 16, no. 23 (2024): 29963–78. https://doi.org/10.1021/acsami.4c01107.

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Anion exchange membrane water electrolyzers (AEMWEs) have an intrinsic advantage over acidic proton exchange membrane water electrolyzers through their ability to use inexpensive, stable materials such as stainless steel (SS) to catalyze the sluggish oxygen evolution reaction (OER). As such, the study of active oxide layers on SS has garnered great interest. Potential cycling is a means to create such active oxide layers <em>in situ</em> as they are readily formed in alkaline solutions when exposed to elevated potentials. Cycling conditions in the literature are rife with unexplained variation

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16

Gao, Xueqiang, Hongmei Yu, Jia Jia, et al. "High performance anion exchange ionomer for anion exchange membrane fuel cells." RSC Advances 7, no. 31 (2017): 19153–61. http://dx.doi.org/10.1039/c7ra01980g.

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The anion exchange ionomer incorporated into the electrodes of an anion exchange membrane fuel cell (AEMFC) enhances anion transport in the catalyst layer of the electrode, and thus improves performance and durability of the AEMFC.

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17

Gonçalves Biancolli, Ana Laura, Daniel Herranz, Lianqin Wang, et al. "ETFE-based anion-exchange membrane ionomer powders for alkaline membrane fuel cells: a first performance comparison of head-group chemistry." Journal of Materials Chemistry A 6, no. 47 (2018): 24330–41. http://dx.doi.org/10.1039/c8ta08309f.

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18

Kwak, Minkyoung, Kasinath Ojha, and Shannon W. Boettcher. "(Invited) Passivated Anodes in Anion-Exchange Membrane Water Electrolyzers." ECS Meeting Abstracts MA2023-01, no. 36 (2023): 2052. http://dx.doi.org/10.1149/ma2023-01362052mtgabs.

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Understanding and engineering the catalyst-electrolyte interface are important for many electrochemical devices. In anion exchange membrane water electrolysis (AEMWE) specifically, the durability of the system is limited by substantial oxidative ionomer degradation at the anodic potentials for oxygen evolution reaction (OER) at the anode. We understand that oxidative ionomer degradation at the anodes is due to the electron transfer from ionomer to the electrode as there is electrical contact between catalysts and ionomers. Here a thin layer of transition metal oxide coating is applied as a pas

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19

Sebastián, David, Giovanni Lemes, José M. Luque-Centeno, María V. Martínez-Huerta, Juan I. Pardo, and María J. Lázaro. "Optimization of the Catalytic Layer for Alkaline Fuel Cells Based on Fumatech Membranes and Ionomer." Catalysts 10, no. 11 (2020): 1353. http://dx.doi.org/10.3390/catal10111353.

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Polymer electrolyte fuel cells with alkaline anion exchange membranes (AAEMs) have gained increasing attention because of the faster reaction kinetics associated with the alkaline environment compared to acidic media. While the development of anion exchange polymer membranes is increasing, the catalytic layer structure and composition of electrodes is of paramount importance to maximize fuel cell performance. In this work, we examine the preparation procedures for electrodes by catalyst-coated substrate to be used with a well-known commercial AAEM, Fumasep® FAA-3, and a commercial ionomer of t

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20

Rossini, Matteo, Burak Koyuturk, Björn Eriksson, Amirreza Khataee, Göran Lindbergh, and Ann Cornell. "Rational Design of Membrane Electrode Assembly for Anion Exchange Water Electrolysis." ECS Meeting Abstracts MA2023-01, no. 36 (2023): 2059. http://dx.doi.org/10.1149/ma2023-01362059mtgabs.

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In the framework of an increased interest for green hydrogen production, Anion Exchange Membrane Water Electrolysis (AEMWE) systems have attracted tremendous attention. Platinum group metal-free (PGM-free) catalysts can be effectively exploited with this technology to reach higher current densities compared to traditional alkaline electrolysis [1]. However, challenges are posed by the stability of the anion conducting polymer in the membrane and in the catalyst layers (CLs). Furthermore, the scarcity of works showing devices with stable performance which can work without a supporting electroly

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21

Park, Habin, Hui Min Tee, Parin Shah, Chandler Dietrich, and Paul Kohl. "Durability and Performance of Poly(norbornene) Membranes and Ionomers in Alkaline Electrolyzers." ECS Transactions 111, no. 4 (2023): 13–19. http://dx.doi.org/10.1149/11104.0013ecst.

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The anion conductive ionomer in the oxygen-producing anode is a critical part of the three-dimensional electrode in the anion exchange membrane alkaline electrolysis. In this study, self-adhesive anode ionomers were designed to chemical bond the anode catalyst particles to the porous transport layer and to the ionomer. It was found that high ion exchange capacity ionomers were not needed for effective electrode polarization because the anode was fed with alkaline electrolyte through the flow channel. The hydrophobic nature of anode ionomer and intimate contact with the catalyst by chemical bon

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22

Titheridge, Laura, Aaron Timothy Marshall, Anouk Soisson, Christina Roth, and Shailendra Kumar Sharma. "Investigating Cathode Ionomer Content and Assembly Techniques for Anion Exchange Water Electrolysers." ECS Meeting Abstracts MA2024-02, no. 43 (2024): 2881. https://doi.org/10.1149/ma2024-02432881mtgabs.

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An ionomer is often used in catalyst layers to a) adhere catalysts to the membrane or transport layer, b) facilitate ionic conductivity for OH- species through catalyst layers, and c) achieve ideal catalyst dispersions in catalyst inks used in spraying methods[1]. The choice of ionomer plays a crucial role in determining ion conductivity, water management, and mechanical stability within the membrane electrode assembly of anion exchange membrane water electrolysers (AEMWEs). Therefore, optimizing ionomer properties is crucial to achieving high-performance AEMWEs with efficient hydroxide transp

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23

Liu, Fanghua, Fanghua Liu, Toshio Iwataki, Makoto Uchida, Katsuyoshi Kakinuma, and Kenji Miyatake. "Highly Gas Permeable and Dimensionally Stable Anion Exchange Ionomers for Anion Exchange Membrane Water Electrolyzers." ECS Meeting Abstracts MA2024-02, no. 43 (2024): 2875. https://doi.org/10.1149/ma2024-02432875mtgabs.

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Hydrogen, as a clean energy carrier, is promising to alleviate the dependence on fossil fuels and contributing to carbon-neutrality. Alkaline water electrolyzers (AEMs) and proton exchange membrane water electrolyzers (PEMWEs) have realized commercialization to produce pure hydrogen, while high corrosiveness resulting from concentrated KOH aqueous solution and low hydrogen production efficiency of AWEs, as well as high cost resulting from platinum group metal (PGM) catalysts of PEMWEs enforced to develop the alternatives. Anion exchange membrane water electrolyzers (AEMWEs) which combine the a

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24

Shang, Zhihao, Ryszard Wycisk, and Peter Pintauro. "Electrospun Composite Proton-Exchange and Anion-Exchange Membranes for Fuel Cells." Energies 14, no. 20 (2021): 6709. http://dx.doi.org/10.3390/en14206709.

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A fuel cell is an electrochemical device that converts the chemical energy of a fuel and oxidant into electricity. Cation-exchange and anion-exchange membranes play an important role in hydrogen fed proton-exchange membrane (PEM) and anion-exchange membrane (AEM) fuel cells, respectively. Over the past 10 years, there has been growing interest in using nanofiber electrospinning to fabricate fuel cell PEMs and AEMs with improved properties, e.g., a high ion conductivity with low in-plane water swelling and good mechanical strength under wet and dry conditions. Electrospinning is used to create

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Weiss, Catherine M., Yushan Yan, and Adam Z. Weber. "Characterization of Water Flux across Anion-Exchange Membranes." ECS Meeting Abstracts MA2024-02, no. 43 (2024): 2940. https://doi.org/10.1149/ma2024-02432940mtgabs.

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The anion-exchange membrane (AEM) is the key component to optimize overall water flux in anion-exchange-membrane fuel cells (AEMFCs) for performance and durability. For alkaline hydrogen oxidation reaction (HOR) in the anode, 4 water molecules are produced for every 4 electrons, and for alkaline oxygen reduction reaction (ORR) in the cathode, 2 water molecules are consumed for every 4 electrons. Water molecules also transport across the AEM from the cathode to the anode along with the hydroxide due to electroosmosis. Due to the reactions and electroosmosis, large water concentration gradient d

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26

Chan, Ai-Lin, Arielle L. Clauser, Melissa E. Kreider, Emily K. Volk, Josh D. Sugar, and Shaun M. Alia. "Investigation on the Interaction of Catalyst and Ionomer in AEM Electrolysis." ECS Meeting Abstracts MA2024-02, no. 43 (2024): 2884. https://doi.org/10.1149/ma2024-02432884mtgabs.

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In low temperature electrolysis, anion exchange membrane (AEM) systems combine the advantages of alkaline and proton exchange membrane (PEM) electrolysis in generating high purity hydrogen and reducing material costs from catalysts and component coatings [1]. Recent studies in AEM electrolysis have focused on improving cell performance, minimizing catalyst dissolution and mitigating ionomer/membrane degradation with different operating conditions. Ionomers play a critical role in the electrode because they provide ion conductivity, enhance mechanical support, and create preferred morphologies

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Poynton, Simon D., Robert C. T. Slade, Travis J. Omasta, et al. "Preparation of radiation-grafted powders for use as anion exchange ionomers in alkaline polymer electrolyte fuel cells." J. Mater. Chem. A 2, no. 14 (2014): 5124–30. http://dx.doi.org/10.1039/c4ta00558a.

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Klein, Jeffrey Michael, Ivana Matanovic, Michelle Lehmann, Tomonori Saito, and Yu Seung Kim. "(Invited) Impact of Phenyl Adsorption of Various Ionomers on the Performance of Anion Exchange Membrane Water Electrolyzers." ECS Meeting Abstracts MA2023-01, no. 36 (2023): 2033. http://dx.doi.org/10.1149/ma2023-01362033mtgabs.

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In this presentation, design principals of ionomeric binders for anion exchange membrane water electrolysis (AEMWE) will be discussed. The crucial impact of phenyl adsorption on AEMWE performance is highlighted with poly(terphenylene), poly(fluorene), poly(aryl piperidinium), or polynorbonene ionomers. Adsorption energies to hydrogen oxidation catalyst surfaces, calculated by density functional theory, demonstrate the utility in the phenyl free ionomer structure wherein lower adsorption energies yield improved AEMWE performance.1,2 Polarization curves with higher adsorption energy ionomers sho

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Koch, Susanne, Philipp A. Heizmann, Sophia K. Kilian, et al. "The effect of ionomer content in catalyst layers in anion-exchange membrane water electrolyzers prepared with reinforced membranes (Aemion+™)." Journal of Materials Chemistry A 9, no. 28 (2021): 15744–54. http://dx.doi.org/10.1039/d1ta01861b.

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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 chemist

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Lee, Ji-Min, and Moon-Sung Kang. "Heterogeneous Anion-Exchange Membranes with Enhanced Ion Conductivity for Continuous Electrodeionization." Membranes 13, no. 12 (2023): 888. http://dx.doi.org/10.3390/membranes13120888.

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In this study, the optimal fabrication parameters of a heterogeneous anion-exchange membrane (AEM) using an ionomer binder are investigated to improve the performance of continuous electrodeionization (CEDI) for producing ultrapure water. Poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) is selected as the base material for preparing the ionomer binder and quaternized to have various ion exchange capacities (IECs). The optimal content of ion-exchange resin (IER) powder according to the IEC of the ionomer binder is then determined through systematic analyses. In conclusion, it is revealed that a het

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Volk, Emily K., Arielle L. Clauser, Melissa E. Kreider, et al. "The Role of the Ionomer in the Catalyst Layer of Anion Exchange Membrane Water Electrolyzers." ECS Meeting Abstracts MA2024-02, no. 45 (2024): 3147. https://doi.org/10.1149/ma2024-02453147mtgabs.

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Anion exchange membrane water electrolyzers (AEMWE) have gained recent attention as a promising low temperature H2O electrolysis technology that combines the benefits of commercial liquid alkaline and proton exchange membrane water electrolyzers (PEMWE), while alleviating concerns over capital cost and materials criticality associated with these existing technologies.1,2 While AEMWEs have achieved significant performance advances in recent decades, overpotentials remain high relative to PEMWE counterparts,2 requiring AEMWE-specific catalyst layer design strategies to further advance this techn

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33

He, Cheng, Ami C. Yang-Neyerlin, and Bryan S. Pivovar. "Probing Anion Exchange Membrane Fuel Cell Cathodes by Varying Electrocatalysts and Electrode Processing." Journal of The Electrochemical Society 169, no. 2 (2022): 024507. http://dx.doi.org/10.1149/1945-7111/ac4daa.

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To date, several high-performing anion exchange membrane fuel cells (AEMFCs) have been demonstrated, but most these studies have focused on Pt containing cathodes with high loadings. Here, we explore and compare the performance and perform electrochemical diagnostics on three leading AEMFC cathode electrocatalysts: Pt/C, Ag/C, and Fe–N–C with electrodes that have been processed with either powder or dispersion-based ionomers using perfluorinated anion exchange polymers. Pt/C had the highest performance but also showed a strong dependence on ionomer type, with powder ionomer exhibiting much hig

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Koch, Susanne, Joey Disch, Sophia K. Kilian, et al. "Water management in anion-exchange membrane water electrolyzers under dry cathode operation." RSC Advances 12, no. 32 (2022): 20778–84. http://dx.doi.org/10.1039/d2ra03846c.

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Dry cathode operation is a desired operation mode in anion-exchange membrane water electrolyzers, but water management is crucial. This is visualized using high-resolution neutron radiography and the ion-exchange capacity of the cathode ionomer is varied.

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Mayerhöfer, Britta, Konrad Ehelebe, Florian D. Speck, et al. "On the effect of anion exchange ionomer binders in bipolar electrode membrane interface water electrolysis." Journal of Materials Chemistry A 9, no. 25 (2021): 14285–95. http://dx.doi.org/10.1039/d1ta00747e.

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Bipolar interfaces located directly between a proton conducting membrane and an anion exchange ionomer based anode catalyst layer are investigated in membrane electrode assemblies for water electrolysis.

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36

Veh, Philipp, Benjamin Britton, Steven Holdcroft, Roland Zengerle, Severin Vierrath, and Matthias Breitwieser. "Improving the water management in anion-exchange membrane fuel cells via ultra-thin, directly deposited solid polymer electrolyte." RSC Advances 10, no. 15 (2020): 8645–52. http://dx.doi.org/10.1039/c9ra09628k.

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Li, Xiuhua, Jinxiong Tao, Guanghui Nie, Liuchan Wang, Liuhong Li, and Shijun Liao. "Cross-linked multiblock copoly(arylene ether sulfone) ionomer/nano-ZrO2 composite anion exchange membranes for alkaline fuel cells." RSC Adv. 4, no. 78 (2014): 41398–410. http://dx.doi.org/10.1039/c4ra06519k.

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Yang, Zhengjin, Yazhi Liu, Rui Guo, Jianqiu Hou, Liang Wu, and Tongwen Xu. "Highly hydroxide conductive ionomers with fullerene functionalities." Chemical Communications 52, no. 13 (2016): 2788–91. http://dx.doi.org/10.1039/c5cc09024e.

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A novel ionomer was designed that will not poison the catalyst in alkaline fuel cells, by incorporating for the first time N-methyl pyrrolidine-C<sub>60</sub> cation in polymeric anion exchange ionomers.

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Li, Yan, Jujia Zhang, Hua Yang, et al. "Boosting the performance of an anion exchange membrane by the formation of well-connected ion conducting channels." Polymer Chemistry 10, no. 22 (2019): 2822–31. http://dx.doi.org/10.1039/c9py00011a.

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Enlarging the discrepancies between hydrophilic/hydrophobic segments in the chemical structure of an ionomer proved to be an efficient strategy to induce the formation of a microphase-separated morphology of the resulting anion exchange membrane.

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Park, Yoo Sei, Myeong Je Jang, Jae-Yeop Jeong, et al. "Optimization of Ionomer Content in Anode Catalyst Layer for Improving Performance of Anion Exchange Membrane Water Electrolyzer." International Journal of Energy Research 2023 (November 8, 2023): 1–10. http://dx.doi.org/10.1155/2023/3764096.

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Anion exchange membrane (AEM) water electrolyzers, which are considered next-generation hydrogen production energy devices, generate hydrogen using a nonprecious metal as the electrocatalyst. However, most current studies tend to focus on the development of highly active electrocatalysts based on nonprecious metals, and there have been few attempts to develop improved electrodes for these devices. In particular, the catalyst layer of the electrode is the key component that directly affects the performance of AEM electrolyzers. In this study, we developed a high-performance anode for the AEM wa

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Narducci, Riccardo. "(Invited) Anion Exchange Membrane Fuel Cells in LIME Laboratory: From Commercial Polymers Towards Biomass Based Materials." ECS Meeting Abstracts MA2022-02, no. 41 (2022): 1505. http://dx.doi.org/10.1149/ma2022-02411505mtgabs.

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Anion exchange membrane fuel cells (AEMFCs) are clean energy conversion devices that are an attractive alternative to the more common proton exchange membrane fuel cells, because they present the advantage of not using noble metals as catalysts for the oxygen reduction reaction (ORR). Unfortunately the low durability of anion exchange membranes (AEMs) in basic conditions limits their use on a large scale. The International Laboratory "Ionomer Materials for Energy" (LIME) group has extensively worked on synthesis of ionomers applying different strategies to mitigate the damaging effect of alkal

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Zheng, Yiwei, Wenchao Ma, Ariana Serban, Andrit Allushi, and Xile Hu. "Anion Exchange Membrane Water Electrolysis at 10 A ⋅ cm−2 Over 800 Hours." Angewandte Chemie International Edition 64, no. 1 (2024): e202413698. https://doi.org/10.1002/anie.202413698.

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Anion exchange membrane water electrolyzer (AEMWE) is a potentially cost-effective technology for green hydrogen production. Although the normal current densities of AEMWEs are below 3 A ⋅ cm<sup>−2</sup>, operating them at higher current densities represents an efficient, but little-explored approach to decrease the total cost of hydrogen production. We show here that a benchmark AEMWE has an operational lifetime of only seconds at an ultrahigh current density of 10 A ⋅ cm<sup>−2</sup>. By using a more conductive and robust AEM, and judicious

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Su, Fa-Cheng, Hsuan-Hung Yu, and Hsiharng Yang. "Anion-Exchange Membranes’ Characteristics and Catalysts for Alkaline Anion-Exchange Membrane Fuel Cells." Membranes 14, no. 12 (2024): 246. http://dx.doi.org/10.3390/membranes14120246.

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This work aims at the effects of anion-exchange membranes (AEMs) and ionomer binders on the catalyst electrodes for anion-exchange membrane fuel cells (AEMFCs). In the experiments, four metal catalysts (nano-grade Pt, PtRu, PdNi and Ag), four AEMs (aQAPS-S8, AT-1, X37-50T and X37-50RT) and two alkaline ionomers (aQAPS-S14 and XB-7) were used. They were verified through several technical parameters examination and cell performance comparison for the optimal selection of AMEs. The bimetallic PdNi nanoparticles (PdNi/C) loaded with Vulcan XC-72R carbon black were used as anode electrodes by using

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Kim, Yu Seung, Jihoon Lim, Jeffrey Michael Klein, et al. "Approaches to Mitigate Electrochemical Ionomer Oxidation." ECS Meeting Abstracts MA2024-02, no. 43 (2024): 2880. https://doi.org/10.1149/ma2024-02432880mtgabs.

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Hydrogen production through anion-exchange membrane water electrolyzers (AEMWEs) presents cost advantages compared to proton-exchange membrane equivalents, thanks to the heightened oxygen evolution reaction (OER) efficiency of platinum-group-metal-free catalysts in alkaline environments. However, the electrochemical oxidation of ionomers at the OER catalyst interface leads to a decrease in local electrode pH, which hampers AEMWE performance. Various strategies at the single-cell level have been explored to tackle this challenge. This article delves into the current understanding of electrochem

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Yanagi, Hiroyuki, and Kenji Fukuta. "Anion Exchange Membrane and Ionomer for Alkaline Membrane Fuel Cells (AMFCs)." ECS Transactions 16, no. 2 (2019): 257–62. http://dx.doi.org/10.1149/1.2981860.

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Khadke, Prashant Subhas, and Ulrike Krewer. "Mass-Transport Characteristics of Oxygen at Pt/Anion Exchange Ionomer Interface." Journal of Physical Chemistry C 118, no. 21 (2014): 11215–23. http://dx.doi.org/10.1021/jp5011549.

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Leonard, Daniel P., Sandip Maurya, Eun Joo Park, et al. "Asymmetric electrode ionomer for low relative humidity operation of anion exchange membrane fuel cells." Journal of Materials Chemistry A 8, no. 28 (2020): 14135–44. http://dx.doi.org/10.1039/d0ta05807f.

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Alia, Shaun M., Melissa E. Kreider, Emily K. Volk, et al. "Materials Integration and Catalyst Interfaces in Anion Exchange Membrane, Low Temperature Electrolysis." ECS Meeting Abstracts MA2024-01, no. 34 (2024): 1710. http://dx.doi.org/10.1149/ma2024-01341710mtgabs.

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Hydrogen has unique advantages as an energy carrier due to its high energy density and abilities in long-term storage and to convert between chemical bonds and electricity. [1] Although hydrogen currently has a small role in energy pathways, decreasing electricity prices can allow for significant growth. Anion-exchange-membrane water electrolysis (AEMWE) holds promise for reaching reduced hydrogen production cost targets, particularly from a materials perspective, and is the primary technology pathway being studied under Low Temperature Electrolysis in the HydroGEN Energy Materials Network (EM

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Akter, Mahamuda, Jiyun Shin, Jong-Hyeok Park, Soryong Chae, and Jin Soo Park. "Alkaline-Stable Anion Conducting Ionomers for Anion Exchange Membrane Water Electrolyzers." ECS Meeting Abstracts MA2023-01, no. 36 (2023): 2000. http://dx.doi.org/10.1149/ma2023-01362000mtgabs.

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Water electrolysis is a process that uses renewable energy to decompose water into oxygen and hydrogen. It is one of the most promising alternatives to produce and store new energy from renewable energy resources. In this study, pore-filled anion exchange membranes (PFAEMs) were prepared by using quaternary ammonia groups along with various cross-linker groups with different chain lengths and using porous polyethylene substrates which were pretreated from hydrophobic into hydrophilic using surfactants. The conductivity of the anion exchange membranes was measured by the in-plane cell and throu

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Yassin, Karam, Igal G. Rasin, Simon Brandon, and Dario R. Dekel. "Elucidating the role of anion-exchange ionomer conductivity within the cathode catalytic layer of anion-exchange membrane fuel cells." Journal of Power Sources 524 (March 2022): 231083. http://dx.doi.org/10.1016/j.jpowsour.2022.231083.

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