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Journal articles on the topic 'Triple phase boundary (TPB)'

Author: Grafiati
Published: 8 June 2024
Last updated: 31 July 2025

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1

Zhang, Shidong, Kai Wang, Shangzhe Yu, et al. "Multiscale and Multiphysical Numerical Simulations of Solid Oxide Cell (SOC)." ECS Transactions 111, no. 6 (2023): 937–54. http://dx.doi.org/10.1149/11106.0937ecst.

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This study presents a novel model for investigating the microstructural evolution of nickel (Ni), yttria-stabilized zirconia (YSZ), and gas phases in a solid oxide cell (SOC), and its effects on cell performance. The triple-phase-boundary (TPB), which is the interface between the three phases, plays a crucial role in the electrochemical reaction of the SOC. However, during operation, nickel particles coarsen or migrate, leading to the redistribution of the TPB. To study this phenomenon, a phase field method was utilized to simulate the fuel electrode's detailed structure, and an approach was d
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2

Wakamatsu, Katsuhiro, Takaaki Yasuda, Yuji Okada, and Teppei Ogura. "First-Principles Studies for Optimal Model of the Ni/YSZ Triple Phase Boundary in Solid Oxide Cells." ECS Transactions 111, no. 6 (2023): 1333–46. http://dx.doi.org/10.1149/11106.1333ecst.

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To resolve the existing issues of solid oxide cells such as degradation and efficiency improvement, it is essential to understand reaction mechanisms on the surface/interface such as triple phase boundary (TPB) as a highly active site that consists of catalysts, electrolytes, and gas phases. However, the reliable TPB model has not been still uniquely defined to discuss the property. In this study, we have focused on the TPB model comprising Ni catalysts, yttria-stabilized zirconia (YSZ) electrolytes, and gas phases and aimed to theoretically identify a reliable TPB model. In concrete, we ident
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3

Putri, Rihan Amila, Dani Gustaman Syarif, and Atiek Rostika Noviyanti. "Correlation Microstructure of Triple Phase Boundary and Crystallinity in SOFC Cells NiO/LSGM/LCM." Research Journal of Chemistry and Environment 26, no. 8 (2022): 44–50. http://dx.doi.org/10.25303/2608rjce044050.

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The electrochemical process in the TPB microstructure depends on the conductivity of the SOFC cell constituent materials. Electrolyte and electrode materials must have good conductivity. The crystallinity of an electrolyte can affect its conductivity. In this study, the electrolyte La0.8Sr0.2Ga0.8Mg0.2O3–δ (LSGM) was used and is known to have good conductivity at intermediate temperatures. The single cell of LSGM electrolyte with La0.7Ca0.3MnO3 (LCM) cathode which has high electronic conductivity and NiO anode which has low area-specific resistance (ASR) is expected to produce compatible cells
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4

Rix, Jillian G., Boshan Mo, Alexey Y. Nikiforov, Uday B. Pal, Srikanth Gopalan, and Soumendra N. Basu. "Quantifying Percolated Triple Phase Boundary Density and Its Effects on Anodic Polarization in Ni-Infiltrated Ni/YSZ SOFC Anodes." Journal of The Electrochemical Society 168, no. 11 (2021): 114507. http://dx.doi.org/10.1149/1945-7111/ac3599.

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Increasing the density of percolated triple phase boundaries (TPBs) by infiltrating nanoscale electrocatalysts can improve the performance of solid oxide fuel cell (SOFC) anodes. However, the complex microstructure of these infiltrated nanocatalysts creates challenges in quantifying their role in anode performance improvements. In this research, scanning electron microscopy of fractured cross-sections of a Ni-nanocatalyst infiltrated anodic symmetric cell along with three-dimensional (3-D) reconstruction of the same anode have been used to quantify the changes in percolated TPB densities due t
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5

Wilson, James R., Marcio Gameiro, Konstantin Mischaikow, William Kalies, Peter W. Voorhees, and Scott A. Barnett. "Three-Dimensional Analysis of Solid Oxide Fuel Cell Ni-YSZ Anode Interconnectivity." Microscopy and Microanalysis 15, no. 1 (2009): 71–77. http://dx.doi.org/10.1017/s1431927609090096.

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AbstractA method is described for quantitatively analyzing the level of interconnectivity of solid-oxide fuel cell electrode phases. The method was applied to the three-dimensional microstructure of a Ni–Y2O3-stabilized ZrO2 (Ni-YSZ) anode active layer measured by focused ion beam scanning electron microscopy. Each individual contiguous network of Ni, YSZ, and porosity was identified and labeled according to whether it was contiguous with the rest of the electrode. It was determined that the YSZ phase was 100% connected, whereas at least 86% of the Ni and 96% of the pores were connected. Tripl
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6

Kong, Wei, Mengtong Zhang, Zhen Han, and Qiang Zhang. "A Theoretical Model for the Triple Phase Boundary of Solid Oxide Fuel Cell Electrospun Electrodes." Applied Sciences 9, no. 3 (2019): 493. http://dx.doi.org/10.3390/app9030493.

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Electrospinning is a new state-of-the-art technology for the preparation of electrodes for solid oxide fuel cells (SOFC). Electrodes fabricated by this method have been proven to have an experimentally superior performance compared with traditional electrodes. However, the lack of a theoretic model for electrospun electrodes limits the understanding of their benefits and the optimization of their design. Based on the microstructure of electrospun electrodes and the percolation threshold, a theoretical model of electrospun electrodes is proposed in this study. Electrospun electrodes are compare
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7

Gao, Min, Cheng Xin Li, Ming De Wang, Hua Lei Wang, and Chang Jiu Li. "Influence of the Surface Roughness of Plasma-Sprayed YSZ on LSM Cathode Polarization in Solid Oxide Fuel Cells." Key Engineering Materials 373-374 (March 2008): 641–44. http://dx.doi.org/10.4028/www.scientific.net/kem.373-374.641.

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Under SOFCs operating condition, the cathode reaction rate is determined by triple phase boundary (TPB) areas which are associated with the geometry of the interface between the cathode and the electrolyte. In this paper, YSZ electrolyte was deposited by atmospheric plasma spraying (APS). A nano-scaled lanthanum strontium manganate (LSM) cathode was prepared by sol-gel process on APS YSZ with different surface roughness to aim at increasing the TPB. The polarization curves of LSM cathode were characterized by potentiostat. The influence of the roughness of APS YSZ on the polarization of LSM ca
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8

Shaikh Abdul, Muhammed Ali, Ahmad Zubair Yahaya, Mustafa Anwar, Mun Teng Soo, Andanastuti Muchtar, and Vadim M. Kovrugin. "Effect of Synthesis Method of Nickel–Samarium-Doped Ceria Anode on Distribution of Triple-Phase Boundary and Electrochemical Performance." Crystals 11, no. 5 (2021): 513. http://dx.doi.org/10.3390/cryst11050513.

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Two-dimensional (2D) electron back scattered diffraction (EBSD) is a powerful tool for microstructural characterization of crystalline materials. EBSD enables visualization and quantification of the effect of synthesis methods on the microstructure of individual grains, thus correlating the microstructure to mechanical and electrical efficiency. Therefore, this work was designed to investigate the microstructural changes that take place in the Ni-SDC cermet anode under different synthesis methods, such as the glycine–nitrate process (GNP) and ball-milling. EBSD results revealed that different
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9

Wakamatsu, Katsuhiro, Takaaki Yasuda, Yuji Okada, and Teppei Ogura. "First-Principles Studies for Optimal Model of the Ni/YSZ Triple Phase Boundary in Solid Oxide Cells." ECS Meeting Abstracts MA2023-01, no. 54 (2023): 207. http://dx.doi.org/10.1149/ma2023-0154207mtgabs.

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Non-Faradaic electrochemical modification of catalytic activity (NEMCA) with electric field applications in solid oxide cells (SOCs) is thought to be induced by spillover effects of lattice oxygen from the bulk, although the detailed mechanism has not still been clear. In SOCs, important phenomena such as fuel decomposition, charge transfer, etc. occur at the triple phase boundary (TPB) as a highly active site that consists of catalyst, electrolyte, and gas phases. NEMCA is expected to be also induced strongly by the surface mechanism on TPB, and understanding surface reactions on TPB is essen
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10

Jeong, Davin, Yonghyun Lim, Hyeontaek Kim, Yongchan Park, and Soonwook Hong. "Silver and Samaria-Doped Ceria (Ag-SDC) Cermet Cathode for Low-Temperature Solid Oxide Fuel Cells." Nanomaterials 13, no. 5 (2023): 886. http://dx.doi.org/10.3390/nano13050886.

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This study demonstrated a silver (Ag) and samarium-doped ceria (SDC) mixed ceramic and metal composite (i.e., cermet) as a cathode for low-temperature solid oxide fuel cells (LT-SOFCs). Introducing the Ag-SDC cermet cathode for LT-SOFCs revealed that the ratio between Ag and SDC, which is a crucial factor for catalytic reactions, can be tuned by the co-sputtering process, resulting in enhanced triple phase boundary (TPB) density in the nanostructure. Ag-SDC cermet not only successfully performed as a cathode to increase the performance of LT-SOFCs by decreasing polarization resistance but also
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11

Jang, Seungsoo, Kyung Taek Bae, Dongyeon Kim, et al. "Microstructural Analysis of Solid Oxide Electrochemical Cells via 3D Reconstruction Using a FIB-SEM Dual Beam System." ECS Transactions 111, no. 6 (2023): 1265–69. http://dx.doi.org/10.1149/11106.1265ecst.

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Solid oxide electrochemical cells (SOCs) have attracted increasing attention as energy conversion devices due to their high efficiency. The microstructures of SOCs play a critical role in their electrochemical performance, however, characterizing them is challenging due to their heterogeneous microstructure. This paper describes a quantitative analysis of SOC microstructures via 3D reconstruction technique using a focused ion beam-scanning electron microscope (FIB-SEM) dual beam system. The reconstructed SOC electrodes offer microstructural characteristics, including particle and pore size, to
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12

Imperial, James Francis L., and Rinlee Butch M. Cervera. "Synthesis and Characterization of Porous NiO/YSZ Electrode Materials Using Different Pore Formers." Materials Science Forum 917 (March 2018): 83–87. http://dx.doi.org/10.4028/www.scientific.net/msf.917.83.

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Solid oxide electrolysis cell (SOEC) cathodes require a good porosity and a fine microstructure in order to maximize the triple phase boundary (TPB) between electronic conductor, ionic conductor and the gas phase involved in the reaction. Nickel oxide and yttria stabilized zirconia (NiO/YSZ) composite, one of the most desired candidates for SOEC cathode material, is synthesized via the glycine-nitrate combustion process and mixed with corn starch and carbon black pore formers in order to observe how they modify its microstructure and porosity. XRD spectra indicate a distinct cubic phases of bo
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13

Sozal, Md Shariful Islam, Wenhao Li, Suprabha Das, et al. "Fabrication and Electrochemical Testing of Silver Pattern Cathodes for Proton Conducting It-SOFC." ECS Meeting Abstracts MA2023-01, no. 54 (2023): 139. http://dx.doi.org/10.1149/ma2023-0154139mtgabs.

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Dense silver (Ag) cathodes with different triple phase boundary (TPB; the interface of gas, electrolyte and electrode) length (LTPB) and electrode area (AELT) were fabricated by photolithography and E-beam evaporation over different proton-conducting electrolytes such as BaZr0.4Ce0.4Y0.1Yb0.1O3– δ (BZCYYb4411). A bi-layer lift-off resist method appears more versatile than single layer for successful pattern cathode fabrication. The electrochemical behaviors of Ag pattern cathodes over the BZCYYb4411 electrolyte were tested with counter electrode such as Ba0.5Sr0.5Co0.8Fe0.2O3-δ and correlated
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14

Ruse, Cristina Mariana, Lily Ann Hume, Yudong Wang, Thomas C. Pesacreta, and Xiao-Dong Zhou. "Quantifying Microstructure Features for High-Performance Solid Oxide Cells." Materials 17, no. 11 (2024): 2622. http://dx.doi.org/10.3390/ma17112622.

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The drive for sustainable energy solutions has spurred interest in solid oxide fuel cells (SOFCs). This study investigates the impact of sintering temperature on SOFC anode microstructures using advanced 3D focused ion beam–scanning electron microscopy (FIB-SEM). The anode’s ceramic–metal composition significantly influences electrochemical performance, making optimization crucial. Comparing cells sintered at different temperatures reveals that a lower sintering temperature enhances yttria-stabilized zirconia (YSZ) and nickel distribution, volume, and particle size, along with the triple-phase
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15

Lei, Yinkai, Tianle Cheng, Tao Yang, William K. Epting, Harry W. Abernathy, and You-Hai Wen. "Modeling the Distribution of Oxygen Partial Pressure in the Electrolyte of Solid Oxide Cells and Its Implication on Microstructure Evolution in the Hydrogen Electrode." ECS Meeting Abstracts MA2023-01, no. 54 (2023): 148. http://dx.doi.org/10.1149/ma2023-0154148mtgabs.

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The distribution of oxygen partial pressure in the electrolyte has an important effect on the stability of solid oxide cells (SOCs). It is well known that the high oxygen partial pressure at the oxygen electrode and electrolyte interface causes delamination, while its effect in the hydrogen electrode (HE) has received comparatively little attention. The only existing model for the distribution of oxygen partial pressure in the electrolyte of SOC is proposed by Virkar et al., which is a one-dimensional model that does not consider the Butler-Volmer equation at triple phase boundary (TPB) nor th
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16

Lei, Yinkai, Tianle Cheng, Tao Yang, William K. Epting, Harry W. Abernathy, and You-Hai Wen. "Modeling the Distribution of Oxygen Partial Pressure in the Electrolyte of Solid Oxide Cells and Its Implication on Microstructure Evolution in the Hydrogen Electrode." ECS Transactions 111, no. 6 (2023): 965–76. http://dx.doi.org/10.1149/11106.0965ecst.

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The distribution of oxygen partial pressure in the electrolyte has an important effect on the stability of solid oxide cells (SOCs). It is well known that the high oxygen partial pressure at the oxygen electrode and electrolyte interface causes delamination, while its effect in the hydrogen electrode (HE) has received comparatively little attention. The only existing model for the distribution of oxygen partial pressure in the electrolyte of SOC is proposed by Virkar et al., which is a one-dimensional model that does not consider the Butler-Volmer equation at triple phase boundary (TPB) nor th
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17

Chou, Chen Chia, Chun Feng Huang, Firman Mangasa Simanjuntak та Ying Ying Wu. "Electrospinning Processing and Microstructural Characterization of Ce0.78Gd0.2Sr0.02O2-δ Fiber for a Composite Anode". Advanced Materials Research 287-290 (липень 2011): 2489–93. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.2489.

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Fabrication of a fiber anode with a mixture of the Gd2O3 and SrO co-doped ceria fibers and the Ni nano-catalyzer by using electrospinning and impregnated process were carried out for application in an intermediate temperature fuel cell (ITFC). Experimental results demonstrate that a uniform co-doped ceria fiber of 100 nm diameter could be spun at the concentration of PVP approximately 11.32 wt.% and electric field of 20 kV. The anodic films were prepared via a nickel wet dipping process and sintered at different temperatures. The micrograph of the anode sintered at 1200°C for1hr has a well def
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18

Bang, Sehee, Jongseo Lee, and Wonyoung Lee. "Highly Connected Oxygen Ion Conduction Pathways for Solid Oxide Fuel Cells Operating in Intermediate Temperatures with Fuel Flexibility." ECS Meeting Abstracts MA2023-01, no. 54 (2023): 10. http://dx.doi.org/10.1149/ma2023-015410mtgabs.

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Solid oxide fuel cells are promising eco-friendly power generating devices directly utilizing various fuels such as hydrogen, methane, and carbon dioxide. However, a technical breakthrough is required for further commercialization by lowering the high operating temperature to the intermediate temperature regime. Introducing the anode functional layer (AFL) between the electrolyte and anode is one of the crucial methods in the development of high performance solid oxide fuel cells by maximizing the triple phase boundary (TPB) sites. To activate the TPB sites, ensuring the continuous oxygen ion
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Liu, Zerui, Jixin Shi, Yuqing Wang, Yixiang Shi, and Ningsheng Cai. "NH3-Fed Patterned Electrode Solid Oxide Fuel Cell: Experimental Performance Characterization and Elementary Reaction Modeling." ECS Meeting Abstracts MA2023-01, no. 54 (2023): 342. http://dx.doi.org/10.1149/ma2023-0154342mtgabs.

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Ammonia-fueled solid oxide fuel cells (SOFCs) have attracted the focus of researchers due to the feature of no carbon emission. Understanding the reaction mechanism is vital for the design and optimization of NH3-fed SOFCs. However, the catalytic decomposition reactions involved in porous electrodes led to the difficulty to distinguish the anode reaction mechanism. In the present study, we utilized a patterned anode to get a designed triple phase boundary (TPB) and avoid the effects of porous electrodes. In the performance test, we found that the current density of the NH3-fed SOFC was approxi
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Liu, Zerui, Jixin Shi, Yuqing Wang, Yixiang Shi, and Ningsheng Cai. "NH3-Fed Patterned Electrode Solid Oxide Fuel Cell: Experimental Performance Characterization and Elementary Reaction Modeling." ECS Transactions 111, no. 6 (2023): 2189–202. http://dx.doi.org/10.1149/11106.2189ecst.

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Ammonia-fueled solid oxide fuel cells (SOFCs) have attracted the focus of researchers due to no carbon emissions in utilization. Understanding the reaction mechanism is vital for the design and optimization of NH3-fed SOFCs. However, the catalytic decomposition reactions involved in porous electrodes led to difficulty in distinguishing the anode reaction mechanism. In the present study, we utilized a patterned anode to obtain a designed triple phase boundary (TPB) and avoid the effects of porous electrodes. In the performance test, we found that the exchange current density of the NH3-fed SOFC
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21

Cheng, Kun, Xiaobo Liu, Wenqiang Li, Zongkui Kou, and Shichun Mu. "Enhancing the Specific Activity of Metal Catalysts Toward Oxygen Reduction by Introducing Proton Conductor." Nano 11, no. 05 (2016): 1650055. http://dx.doi.org/10.1142/s1793292016500557.

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Enhancing oxygen reduction reaction (ORR) activity and simultaneously reducing usage of noble metal catalysts are significantly important both in fundamental and applied science communities for polymer electrolyte fuel cells (PEFCs). In this work, we confirm the proton conductor (perfluorosulfonic acid, containing [Formula: see text]SO3H) can promote the specific activity [Formula: see text] of metal catalysts toward ORR. Herein, Pt nanoparticles (NPs) with a small and narrow size distribution are encapsulated with perfluorosulfonic acid through a simple colloidal route. The resulting catalyst
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22

Sato, Kazuyoshi, Masayasu Uemura, Akira Kondo, Hiroya Abe, Makio Naito, and Kiyoshi Nogi. "Microstructural Control of Composite Anode for Anode Supported Intermediate Temperature Solid Oxide Fuel Cells." Advances in Science and Technology 45 (October 2006): 1869–74. http://dx.doi.org/10.4028/www.scientific.net/ast.45.1869.

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Appropriate mechanical milling in dry ambient can improve the mixing state of two powder materials as well as produce their composite particles. In this study the influences of milling on microstructure and performance of anode supported SOFCs was investigated. First, NiO and YSZ powder mixture was milled using an attrition type apparatus for 5 and 30 min. The SOFCs were made through conventional ceramic processing with the milled powder mixtures. The different milling time brought to significant change in power density of the SOFCs. When the powder mixture milled for 5 min was applied, maximu
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Chou, Chen Chia, Chun Feng Huang, and Min Jen Chen. "Fabrication and Characterization of Solid Oxide Fuel Cell Anode with Impregnated Catalytic Ni-CeO2 Nano-Particles on 8YSZ Fibers." Advanced Materials Research 287-290 (July 2011): 2485–88. http://dx.doi.org/10.4028/www.scientific.net/amr.287-290.2485.

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Development of a solid oxide fuel cell anode by impregnating catalytic Ni and Ni-CeO2 nano-particles on 8YSZ fiber structure was carried out in this work. The nano-scale 8YSZ fibers were successfully fabricated by the electrospinning process and were well matched with the 8YSZ electrolyte. The experimental results demonstrated that the Ni/8YSZ anode with nano-8YSZ fibers, which impregnated with 3M nickel nitrate, decreases the polarization resistance and increases the exchange current density. However, the lowest polarization resistance and the highest exchange current density are observed in
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Budac, Daniel, Vojtech Milos, Michal Carda, Martin Paidar, and Karel Bouzek. "Simulation of Electrical Conductivity of Porous Composite Electrodes for Solid Oxide Cells Using a Monte Carlo 3D Equivalent Electronic Circuit Networks." ECS Meeting Abstracts MA2024-01, no. 37 (2024): 2217. http://dx.doi.org/10.1149/ma2024-01372217mtgabs.

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Solid oxide cells (SOCs) show high potential in energy conversion applications necessary for the decarbonization of the economy. Their advantage consists in ability to operate at high temperatures, reaching up to 900 °C. Firstly, it results in accelerated electrode reactions kinetics, secondly, in favorable thermodynamic conditions decreasing the equilibrium voltage of the water splitting. As a result, SOCs are attractive candidates for both efficient electrolysis and fuel cell applications, offering a robust solution in the pursuit of clean energy. However, the elevated operational temperatur
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Dzara, Michael, Heather S. Slomski, Zhikuan Zhu, et al. "Tracking Microstructural Evolution of the Ni-Cermet Fuel Electrode in Solid Oxide Electrolyzers Using X-Ray Nano Computed Tomography." ECS Meeting Abstracts MA2024-02, no. 48 (2024): 3458. https://doi.org/10.1149/ma2024-02483458mtgabs.

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Decarbonization of hydrogen production is critically important to the renewable energy economy, indeed, the US Department of Energy recently released the Hydrogen Shot, setting the target at reducing the cost of clean hydrogen to $1 per kilogram in 1 decade. Of the electrolysis technologies that might meet the Hydrogen Shot goal, high temperature electrolysis based on solid oxide electrolysis cells (SOECs) is particularly promising due to its high efficiency and the ability to avoid the use of expensive and scarce metal catalysts.1 However, the harsh environment (high temperature, reducing/oxi
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Waseem, Saad, Matthew Barre, Katarzyna Sabolsky, Richard Hart, Seunghyuck Hong, and Edward Sabolsky. "Metal Composite Nano-Catalyst Enhanced Solid Oxide Fuel Cell Anodes for Improved Performance and Stability with Hydrocarbon Containing Fuels." ECS Meeting Abstracts MA2023-01, no. 54 (2023): 77. http://dx.doi.org/10.1149/ma2023-015477mtgabs.

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Implementation of nano-catalyst materials into solid oxide fuel cell (SOFC) electrodes to improve performance and stability has been widely studied. Addition of the nano-catalysts into an electrode structure serves to enhance the electrochemical performance of the SOFC by increasing the Triple Phase Boundary (TPB) area, improving redox stabilization, and modifying reaction kinetics of hydrocarbon gasses that cause anode degradation due to carbon deposition. SOFCs operating upstream of a reformer need to exhibit good tolerance to any hydrocarbon components that may make their way to the stack.
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Pibulchinda, Pattiya, and Scott A. Barnett. "(Invited) Studying Ni-YSZ Fuel Electrode Microstructure and Characteristics Using Symmetric Cells." ECS Meeting Abstracts MA2024-02, no. 48 (2024): 3462. https://doi.org/10.1149/ma2024-02483462mtgabs.

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Electrode-supported solid oxide cell (SOC) performance, efficiency, and stability are largely dependent on their Ni-YSZ cermet electrodes and supports. The design variables for these Ni-YSZ layers include the Ni/YSZ ratio, pore former volume fraction/size, thicknesses, and the firing conditions that partly determine their microstructures. These parameters can be used to optimize the electrode by maximizing active triple phase boundary (TPB) density in the functional layer, maximizing gas transport through the support, achieving required conductivity, maintaining mechanical strength, and minimi
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Hwang, Jaewon, and Suk Won Cha. "Manipulation of Anode Nanostructure and Composition By Glancing Angle Deposition for Thin-Film Solid Oxide Fuel Cells." ECS Meeting Abstracts MA2022-02, no. 47 (2022): 1768. http://dx.doi.org/10.1149/ma2022-02471768mtgabs.

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Co-sputtering is a simple yet effective technique for fabricating a thin film of composite materials and different compositions by adjusting the electrical power of each sputtering target. However, practical issues arise when depositing cermet materials such as Ni-YSZ and Ni-GDC because of the contrasting characteristics of metal and ceramic sputtering targets. For example, the surface binding energy of GDC is significantly higher than that of Ni, resulting in a considerably lower sputtering yield of GDC. The difference in sputtering yield is further exacerbated by the low power density limit
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Tanaka, Akihisa, Keisuke Nagato, Morio Tomizawa, Gen Inoue, and Masayuki Nakao. "Modeling of Relative Humidity-Dependent Impedance of Polymer Electrolyte Membrane Fuel Cells." ECS Meeting Abstracts MA2022-02, no. 39 (2022): 1366. http://dx.doi.org/10.1149/ma2022-02391366mtgabs.

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1. Introduction Polymer electrolyte membrane fuel cells (PEMFCs) are highly efficient devices that utilize hydrogen energy. The large overpotential of PEMFCs, particularly under low relative humidity (R.H.) conditions [1], is a challenge. Equivalent circuit modeling is an effective technique for impedance analysis, in which circuit elements are used to simulate electrode reactions [2]. The transmission line model (TLM) is often used for porous electrodes including PEMFCs [3]. In this study, a TLM was constructed considering the resistance distribution in the cathode catalyst layer (CCL), and t
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Sciazko, Anna, Yosuke Komatsu, Takaaki Shimura, Yusuke Sunada, and Naoki Shikazono. "Correlation Between Microstructure and Performance of GDC-Based Electrodes." ECS Meeting Abstracts MA2023-01, no. 54 (2023): 51. http://dx.doi.org/10.1149/ma2023-015451mtgabs.

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Gadolinium doped ceria (GDC) gains increasing attention as a promising material for both solid oxide fuel cells (SOFCs) and solid oxide electrolysis cells (SOECs). The GDC-based electrodes demonstrate positive features, e.g. enhanced electrochemical performance in low operation temperatures, resistivity to sulfur poisoning and carbon deposition, etc. As GDC is a mixed electronic-ionic conductor in reducing atmosphere, electrochemical reactions can be supported by the double phase boundary (DPB) at the GDC surface. Several studies demonstrated that the DPB reaction may dominate the electrochemi
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Mora, Joy Marie, and Po-Ya Abel Chuang. "Investigation and Characterization of Interfacial Transport Phenomena in the Catalyst Layer Using Rheo-Impedance Measurement." ECS Meeting Abstracts MA2024-01, no. 36 (2024): 2114. http://dx.doi.org/10.1149/ma2024-01362114mtgabs.

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Electrodes or catalyst layers (CLs) are the heart of fuel cell and electrolyzer cell devices. They are mainly heterogeneous porous electrodes composed of catalyst particles, ion-conducting polymer material, and void spaces that make up the triple-phase boundary (TPB). It is important to tailor the CL’s microstructure such that there are abundant TPBs where reactions take place to maximize catalyst utilization and improve cell performance. However, this is a critical challenge due to lack of fundamental understanding of the interfacial transport within the CL. Understanding how catalyst ink par
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Pidburtnyi, Mykhailo, Haris Masood Ansari, and Viola Ingrid Birss. "Detailed Mechanistic Studies of Electrochemical Reactions on Pt and Au Electrodes in Solid Oxide Cells Via EIS Data Analysis." ECS Meeting Abstracts MA2022-01, no. 49 (2022): 2072. http://dx.doi.org/10.1149/ma2022-01492072mtgabs.

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In order to reduce the environmental impact of fossil fuels, a range of sustainable technologies for power generation and storage are currently being developed. In addition, efficient and low-cost methods for CO2 capture and conversion to form useful products are critically needed. One of the promising technologies towards achieving these goals involves the use of solid oxide cells (SOC), which are unique devices that can be employed in both the fuel cell mode for clean power generation and in the electrolysis mode to achieve CO2 conversion through its electrochemical reduction (‘CO2RR’). One
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Ishiguro, Hikaru, Hiroki Muroyama, and Toshiaki Matsui. "Microstructural Analysis of Stainless Steel Support/Ni-YSZ Anode Interface in Metal-Supported SOFCs." ECS Meeting Abstracts MA2024-02, no. 48 (2024): 3417. https://doi.org/10.1149/ma2024-02483417mtgabs.

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Solid oxide fuel cells (SOFCs) have attracted attention due to their high energy conversion efficiency and fuel flexibility. However, conventional anode-supported SOFCs composed solely of ceramics are susceptible to thermal stress such as rapid temperature rises and drops, which can cause cell cracks. Therefore, metal-supported SOFCs (MS-SOFCs) have been devised that use a stainless steel with excellent heat resistance as a support. In MS-SOFCs, elemental diffusion from the metal support during the cell manufacturing process causes microstructural changes in electrodes, leading to a reduction
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34

Tao, Junyi, Gao Yao, Yosuke Komatsu, Anna Sciazko, Takao Okabe, and Naoki Shikazono. "Study on the Effect of Anode Overpotential on Ni Morphology Changes Using Patterned Ni-YSZ Fuel Electrodes in Solid Oxide Fuel Cells." ECS Meeting Abstracts MA2025-01, no. 41 (2025): 2209. https://doi.org/10.1149/ma2025-01412209mtgabs.

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Solid oxide cells (SOCs) are promising energy utilization technologies due to their ability to reversibly convert chemical and electrical energy in solid oxide fuel cell (SOFC) and solid oxide electrolysis cell (SOEC) modes [1]. Currently, porous nickel-yttria-stabilized zirconia (Ni-YSZ) cermet is the most widely used material for SOC fuel electrodes [2]. However, due to Ni migration and agglomeration, fuel electrode degradation remains one of the main challenges for SOCs commercialization [3]. The patterned Ni-YSZ fuel electrode can be an effective tool to study Ni migration in solid oxide c
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35

Budac, Daniel, Michal Carda, Martin Paidar, and Karel Bouzek. "Electrical Conductivity of LSM—YSZ Oxygen Electrode for Determining Active Electrode Zone in Solid Oxide Cells." ECS Meeting Abstracts MA2022-01, no. 26 (2022): 1233. http://dx.doi.org/10.1149/ma2022-01261233mtgabs.

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Solid oxide cells (SOCs) show high potential in applications related to sustainable society. The substantial contribution of the SOCs is their high efficiency in terms of the electric energy utilization due to the operating temperature up to 800 °C. The effect of high operation temperature is favorable in two ways. Firstly, it accelerates the kinetics of electrochemical reactions preventing the need of the use of Pt-based catalysts. Secondly, the high temperature offers favorable thermodynamic conditions decreasing the equilibrium potential for water splitting. This makes the SOCs technology a
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36

Ma, Tien Ching, Manuel Hegelheimer, Andreas Hutzler, Richard Hanke-Rauschenbach, and Simon Thiele. "1D One-Phase Modeling of the Anode Catalyst Layer/Porous Transport Layer Interface Affecting Proton Exchange Membrane Water Electrolysis." ECS Meeting Abstracts MA2023-02, no. 42 (2023): 2132. http://dx.doi.org/10.1149/ma2023-02422132mtgabs.

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Optimizing the structure of the porous transport layer (PTL) is crucial for improving the performance of proton exchange membrane water electrolysis (PEMWE), particularly for cells with low anode catalyst loadings. A growing number of studies reveal that catalysts are normally not entirely utilized in PEMWE, whereas the degree of catalyst utilization strongly depends on the structure of the PTL. As the oxygen evolution reaction (OER) at the anode is the limiting reaction step in PEMWE, inefficient use of the anode catalyst layer (aCL) would result in higher activation losses and, thus, cause a
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37

Ju, Kyoungjae, Hyong June Kim, Dong Won Shin, et al. "Fabrication of Anode Functional Layer By Reactive Sputtering for Large Area Thin-Film Solid Oxide Cells." ECS Meeting Abstracts MA2024-02, no. 48 (2024): 3416. https://doi.org/10.1149/ma2024-02483416mtgabs.

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Solid Oxide Cells (SOCs), the electrochemical device that converts chemical to electrical energy, or electrical to chemical energy, have been highlighted for its high efficiency, fuel flexibility, and reversible operation modes between fuel cells and electrolyzers. Recent research has focused on developing intermediate-temperature SOCs (operating between 500 ~ 700°C) to address issues such as thermal durability, and cost. However, reducing the operating temperature presents challenges including decreased rates of charge and ion transport. Consequently, fabricating thin-film SOCs (TF-SOCs) cons
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38

Ozaki, Ryota, Yohei Nagatomo, Ko Yoshiga, et al. "Electrochemical Performance of Fuel-Electrode-Supported Reversible Solid Oxide Cells with a Ni-GDC Functional Layer." ECS Meeting Abstracts MA2024-02, no. 48 (2024): 3452. https://doi.org/10.1149/ma2024-02483452mtgabs.

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Introduction Reversible solid oxide cells (r-SOCs) can generate electricity in SOFC mode and produce hydrogen in SOEC mode. R-SOCs are promising electrochemical energy devices that can manage power derived from renewable energy sources by switching operating modes (1). Fuel-electrode-supported cells, which are widely used in both SOFCs and SOECs, exhibit higher performance even at lower operation temperature due to the use of thin electrolytes. Ni-yttria-stabilized zirconia (YSZ) is widely used as the fuel electrode material in fuel-electrode-supported cells because of its high ionic conductiv
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Yang, Byung Chan, Sung Eun Jo, Taeyoung Kim, et al. "Methanol Fueled Low Temperature Solid Oxide Fuel Cell with Pt-SDC Anodes." ECS Meeting Abstracts MA2022-02, no. 47 (2022): 1763. http://dx.doi.org/10.1149/ma2022-02471763mtgabs.

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A low-temperature solid oxide fuel cell (LT-SOFC) is a next-generation energy conversion device and has advantages of high energy efficiency, fast start up and shut down and eco-friendliness. In addition, since it has the advantage of being able to use various fuels such as hydrogen, alcohol, and methane gas, research is being actively conducted in recent years. However, LT-SOFC using hydrogen as a fuel has difficulties in storing and transporting fuel, making it difficult to apply as a portable device. On the other hand, methanol fuel is an attractive alternative fuel because it is easier to
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40

Lee, Young Moo. "(Invited) Porous Organic Polymers as Binders for Energy Devices." ECS Meeting Abstracts MA2025-01, no. 7 (2025): 762. https://doi.org/10.1149/ma2025-017762mtgabs.

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The ionomers (or binders) in the catalyst layer of energy devices such as fuel cells or water electrolyzers are of importance, as they regulate the hydrophobicity and hydrophilicity of the catalyst layer, and control the electrode-membrane interface that establishes the triple phase boundary (TPB) between the proton conductive electrolyte, electron conductive catalyst, and reactant gases. Binders serve as an adhesive matrix, aggregating dispersed catalyst particles into a porous network. This is essential for providing mechanical stability to the electrodes while simultaneously maximizing the
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41

Kameda, Keisuke, Taishiro Wakamiya, Reimi Takagi, Sergei Manzhos, and Manabu Ihara. "Significantly Improved Stability of Carbon/Air Secondary Battery System By Separating Carbon Deposition Area." ECS Meeting Abstracts MA2024-02, no. 48 (2024): 3400. https://doi.org/10.1149/ma2024-02483400mtgabs.

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Introduction The carbon/air secondary battery (CASB) system is a promising large-capacity energy storage technology [1]. The CASB system utilizes a redox reaction of C + O2 ⇄ CO2 by solid oxide fuel cells/electrolysis cells (SOFCs/SOECs), namely a combination of rechargeable direct carbon fuel cells [1, 2] and CO2 electrolysis cells. Carbon and liquid CO2 are stored in and outside SOFCs/SOECs respectively. The advantages of the CASB system are high theoretical efficiency of close to 100%, high volumetric energy density of 1625 Wh L-1 based on carbon and liquid CO2 (25oC, 6.4 MPa), and high saf
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42

Kamiya, Kazuhide. "(Invited) High-Rate CO2 Reduction Reactions: From Electrocatalysts to Gas-Diffusion Electrodes." ECS Meeting Abstracts MA2023-02, no. 47 (2023): 2366. http://dx.doi.org/10.1149/ma2023-02472366mtgabs.

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Excessive emissions of carbon dioxide (CO2) from the use of fossil fuels are becoming a serious obstacle to the sustainable development of society. Electrochemical CO2 reduction (CO2RR) into value-added products using solar electricity is a promising technology to close the carbon cycle and sequester anthropogenic CO2 into chemical feedstocks.[1] The practical implementation of CO2RR requires a high current density, as the current density for CO2RR is directly correlated to the capital cost of the electrodes and electrochemical cells. The use of gas diffusion electrodes (GDEs) effectively acce
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43

Zhu, Mei, and Xian Zhi Xu. "The Three-Phase Boundary Dynamic Variation of the Porous Gas Electrode." Advanced Materials Research 255-260 (May 2011): 1810–14. http://dx.doi.org/10.4028/www.scientific.net/amr.255-260.1810.

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In order to observe the three-phase boundary (TPB) variation of the porous gas electrode, a new laying style of the porous gas electrode was proposed. Two electrodes with different ingredient were taken in the experiment under the same condition to testify that there are three distinct stages of the TPB dynamic variation.Each stage has its own apparent phenomenon and the variation time of each stage is different for each electrode. The relationship between the electric conductance and the TPB variation of the electrode were also analyzed by the theoretical calculating formula. The result showe
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44

O’Hayre, Ryan, David M. Barnett, and Fritz B. Prinz. "The Triple Phase Boundary." Journal of The Electrochemical Society 152, no. 2 (2005): A439. http://dx.doi.org/10.1149/1.1851054.

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45

Khandale, Anushree P., та R. Vinoth Kumar. "Facile and Low Temperature Synthesis of Nd1.8Sr0.2NiO4-δ Cathode Nanofibers for Intermediate Temperature Solid Oxide Fuel Cells". ECS Meeting Abstracts MA2023-02, № 46 (2023): 2271. http://dx.doi.org/10.1149/ma2023-02462271mtgabs.

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Solid oxide fuel cells (SOFCs) are usually operated at high temperatures (800-1000 °C). As the overall efficiency of SOFC is governed by thermodynamics and kinetics during operation, reducing the operating temperature to 500-650 °C causes significant increase in the electrode polarization losses especially at cathode due to high activation energy towards oxygen reduction reaction (ORR) at cathode, which eventually reduces the overall cell performance. Addressing increased polarization losses at relatively low temperatures (500-650 °C) has been the key issue and a focus of many groups over past
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46

Bal, Batuhan, Mykhailo Pidburtnyi, and Viola Ingrid Birss. "Improving the Performance of High Temperature Steam Electrolysis Using Ceria-Modified Perovskite Electrodes." ECS Meeting Abstracts MA2025-01, no. 47 (2025): 3179. https://doi.org/10.1149/ma2025-01473179mtgabs.

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Hydrogen production through steam electrolysis at high operating temperatures (ca. 800 °C) using solid oxide electrolysis cells (SOECs) offers significant advantages over low-temperature systems, due to their highly accelerated reaction kinetics and favorable thermodynamics. Traditionally used SOEC catalysts generally have a porous structure and consist of a mixture of electronically conducting Ni and ionically conducting yttria-stabilized zirconia (YSZ) (cermets). These systems rely on regions known as the triple phase boundary (TPB), where the electronically and ionically conducting phases a
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47

Miwa, Kohei, and Hirohisa Tanaka. "Fe-N-C Catalysts Surpassing Pt Catalysts in ORR for Fuel Cells." ECS Meeting Abstracts MA2024-02, no. 45 (2024): 3129. https://doi.org/10.1149/ma2024-02453129mtgabs.

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As countries ramp up efforts towards achieving carbon neutrality, fuel cells are garnering attention. Conventional fuel cells, utilizing precious metals like Pt, face challenges due to resource and cost constraints. Addressing this issue is seen as a key step towards further proliferation of fuel cells. Therefore, we are conducting research on Fe-N-C catalysts, which utilize abundant and affordable metals like iron, aiming to overcome these challenges. Cathode-side oxygen reduction reaction (ORR) occurring at a higher potential and smooth 4-electron reduction are key factors leading to the imp
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48

Yamagishi, Rena, Anna Sciazko, Yosuke Komatsu, and Naoki Shikazono. "(Digital Presentation) Synthesizing Electrode Microstructures with Predefined Spatial Gradients By Conditional Generative Adversarial Networks." ECS Meeting Abstracts MA2022-01, no. 38 (2022): 1683. http://dx.doi.org/10.1149/ma2022-01381683mtgabs.

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Recent progress of manufacturing techniques in the field of solid oxide fuel cells (SOFCs) enables fabrications of complex multi-sized gradient microstructures with the spatially varied properties. Methods using additive manufacturing, layer-by-layer deposition, tape casting, nano-imprint, pulse laser deposition and laser engraving, etc. provide possibilities to fabricate 3D structures with flexible design. Moreover, the spatially optimized structures can provide better mechanical and thermal properties, enhance diffusion and improve electrochemical reaction kinetics. In particular, multi-laye
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49

Lorenz, Oliver, Alexander Kühne, Martin Rudolph, et al. "Role of Reaction Intermediate Diffusion on the Performance of Platinum Electrodes in Solid Acid Fuel Cells." Catalysts 11, no. 9 (2021): 1065. http://dx.doi.org/10.3390/catal11091065.

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Understanding the reaction pathways for the hydrogen oxidation reaction (HOR) and the oxygen reduction reaction (ORR) is the key to design electrodes for solid acid fuel cells (SAFCs). In general, electrochemical reactions of a fuel cell are considered to occur at the triple-phase boundary where an electrocatalyst, electrolyte and gas phase are in contact. In this concept, diffusion processes of reaction intermediates from the catalyst to the electrolyte remain unconsidered. Here, we unravel the reaction pathways for open-structured Pt electrodes with various electrode thicknesses from 15 to 2
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50

Dhanda, Abhishek, Ryan O'Hayre, and Heinz Pitsch. "EIS Analysis of the Triple Phase Boundary Model." ECS Transactions 19, no. 32 (2019): 23–31. http://dx.doi.org/10.1149/1.3268159.

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