Journal of the Electrochemical Society, volume 167, issue 6, pages 64515
Carbon Support Microstructure Impact on High Current Density Transport Resistances in PEMFC Cathode
1
Fuel Cell Business, Global Propulsion Systems, General Motors, Pontiac, Michigan 48340, United States of America
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Publication type: Journal Article
Publication date: 2020-01-04
Quartile SCImago
Q1
Quartile WOS
Q2
Impact factor: 3.9
ISSN: 00134651, 19457111
Materials Chemistry
Surfaces, Coatings and Films
Electronic, Optical and Magnetic Materials
Electrochemistry
Condensed Matter Physics
Renewable Energy, Sustainability and the Environment
Abstract
Cell voltages at high current densities (HCD) of an operating proton-exchange membrane fuel cell (PEMFC) cathode suffer from losses due to the local-O2 and bulk-H+ transport resistances in the catalyst layer. Particularly, the microstructure of high surface area carbon (HSC) support upon which both the platinum catalyst and ionomer are dispersed play a pivotal role in controlling the reactant transport to the active site in the catalyst layer. In this study, we perform a systematic analysis of the underlying microstructure of platinum-cobalt catalyst dispersed on various HSC supports in terms of their surface area and pore-size distribution. The carbon microstructure was found to strongly influence the PtCo nanoparticle dispersion, catalyst layer ionomer distribution and transport losses governing the performance at HCD. Catalyst layer electrochemical diagnostics carried out to quantify local-O2 transport resistance and bulk-H+ transport resistance in the cathode were found to be directly correlated to the micropore (<2 nm) and macropore (>8 nm) surface areas of the carbon support, respectively. Finally, a 1D-performance model has been developed to assimilate our understanding of the catalyst layer microstructure and transport resistances at HCD.
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- We do not take into account publications without a DOI.
- Statistics recalculated only for publications connected to researchers, organizations and labs registered on the platform.
- Statistics recalculated weekly.
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Ramaswamy N. et al. Carbon Support Microstructure Impact on High Current Density Transport Resistances in PEMFC Cathode // Journal of the Electrochemical Society. 2020. Vol. 167. No. 6. p. 64515.
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Ramaswamy N., Gu W., Ziegelbauer J. M., Kumaraguru S. Carbon Support Microstructure Impact on High Current Density Transport Resistances in PEMFC Cathode // Journal of the Electrochemical Society. 2020. Vol. 167. No. 6. p. 64515.
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TY - JOUR
DO - 10.1149/1945-7111/ab819c
UR - https://doi.org/10.1149/1945-7111/ab819c
TI - Carbon Support Microstructure Impact on High Current Density Transport Resistances in PEMFC Cathode
T2 - Journal of the Electrochemical Society
AU - Ramaswamy, Nagappan
AU - Gu, Wenbin
AU - Ziegelbauer, Joseph M.
AU - Kumaraguru, Swami
PY - 2020
DA - 2020/01/04 00:00:00
PB - The Electrochemical Society
SP - 64515
IS - 6
VL - 167
SN - 0013-4651
SN - 1945-7111
ER -
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@article{2020_Ramaswamy,
author = {Nagappan Ramaswamy and Wenbin Gu and Joseph M. Ziegelbauer and Swami Kumaraguru},
title = {Carbon Support Microstructure Impact on High Current Density Transport Resistances in PEMFC Cathode},
journal = {Journal of the Electrochemical Society},
year = {2020},
volume = {167},
publisher = {The Electrochemical Society},
month = {jan},
url = {https://doi.org/10.1149/1945-7111/ab819c},
number = {6},
pages = {64515},
doi = {10.1149/1945-7111/ab819c}
}
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MLA
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Ramaswamy, Nagappan, et al. “Carbon Support Microstructure Impact on High Current Density Transport Resistances in PEMFC Cathode.” Journal of the Electrochemical Society, vol. 167, no. 6, Jan. 2020, p. 64515. https://doi.org/10.1149/1945-7111/ab819c.