Results 161 to 170 of about 4,245 (208)
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ECS Transactions, 2010
Performance decay in a polymer-electrolyte fuel cell can result from changes in the gas-diffusion layer, particularly in the micro-porous layer. Examples and characteristics of this decay will be presented here. Performance decay is greater with exposure to potential cycles than with exposure to constant high potential holds.
Mike L. Perry, Tim Patterson, Tom Madden
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Performance decay in a polymer-electrolyte fuel cell can result from changes in the gas-diffusion layer, particularly in the micro-porous layer. Examples and characteristics of this decay will be presented here. Performance decay is greater with exposure to potential cycles than with exposure to constant high potential holds.
Mike L. Perry, Tim Patterson, Tom Madden
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ECS Meeting Abstracts, 2006
Abstract not Available.
Shelley Minteer, Jeanne Kerr
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Abstract not Available.
Shelley Minteer, Jeanne Kerr
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ASME 2009 7th International Conference on Nanochannels, Microchannels and Minichannels, 2009
Polymer electrolyte fuel cells (PEFCs) are one of the most interesting alternatives for a pollution-free electrical energy production in many applications where a highly reliable source of electricity is needed. One of the major challenges in the development of PEFCs is to exploit the whole capacity that is inherent to a given membrane electrode ...
Kaspar Andreas Friedrich +2 more
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Polymer electrolyte fuel cells (PEFCs) are one of the most interesting alternatives for a pollution-free electrical energy production in many applications where a highly reliable source of electricity is needed. One of the major challenges in the development of PEFCs is to exploit the whole capacity that is inherent to a given membrane electrode ...
Kaspar Andreas Friedrich +2 more
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Journal of The Electrochemical Society, 2004
A three-dimensional, single-phase, isothermal numerical model of polymer electrolyte fuel cell ~PEFC! was employed to investigate effects of electron transport through the gas diffusion layer ~GDL! for the first time. An electron transport equation was additionally solved in the catalyst and gas diffusion layers, as well as in the current collector. It
Hua Meng, Chao-Yang Wang
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A three-dimensional, single-phase, isothermal numerical model of polymer electrolyte fuel cell ~PEFC! was employed to investigate effects of electron transport through the gas diffusion layer ~GDL! for the first time. An electron transport equation was additionally solved in the catalyst and gas diffusion layers, as well as in the current collector. It
Hua Meng, Chao-Yang Wang
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Influence of current densities in SOFC and PEFC stacks on a SOFC–PEFC combined system
Journal of Power Sources, 2007Abstract A solid oxide fuel cell (SOFC)–polymer electrolyte fuel cell (PEFC) combined system was investigated by numerical simulation. Here, the effect of the current densities in the SOFC and the PEFC stacks on the system's performance is evaluated under a constant fuel utilization condition.
M. Yokoo +3 more
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ECS Transactions, 2009
Water transport within a polymer electrolyte fuel cell (PEFC) electrode has been probed. A method to reveal tortuosity within the PEFC electrode is demonstrated. NMR relaxation and diffusion measurements are applied to yield information about molecular local interaction and long range diffusion, respectively, within the electrode sample.
Che-Nan Sun, Thomas A. Zawodzinski
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Water transport within a polymer electrolyte fuel cell (PEFC) electrode has been probed. A method to reveal tortuosity within the PEFC electrode is demonstrated. NMR relaxation and diffusion measurements are applied to yield information about molecular local interaction and long range diffusion, respectively, within the electrode sample.
Che-Nan Sun, Thomas A. Zawodzinski
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A Combined System of an SOFC and PEFCs
ECS Meeting Abstracts, 2009Abstract not Available.
Hisataka Yakabe +2 more
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Characterizing Degradation in PEFC
ECS Meeting Abstracts, 2010Abstract not Available.
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Analysis of Degradation Mechanisms of PEFCs
ECS Meeting Abstracts, 2006Abstract not Available.
Tomohiro Takeshita +2 more
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In-situ Electrochemical Diagnostics in PEFCs
ECS Meeting Abstracts, 2009Abstract not Available.
Satheesh Sambandam, V. Ramani
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