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Title: (Plenary) Electrochemical Diagnostics and Modeling in Developing the PEMFC Cathode

Reducing the use of precious metal in a proton exchange membrane fuel cell is a key challenge in mass commercialization of fuel cell electric vehicles. However, as Pt loadings are reduced, fuel cell performance losses due to mass transport phenomena become more localized to the Pt and ionomer interface. In this paper, we provide an overview of how we use in-situ electrochemical diagnostics and modeling to understand the performance of low-Pt electrodes, identify their key limiting factors, and guide our catalyst layer development. Furthermore, diagnostics used to quantify the local-Pt oxygen transport resistance and the ionomer adsorption on the Pt surface will be discussed.
Authors:
 [1] ;  [1] ;  [2] ;  [1] ;  [1]
  1. General Motors, Pontiac, MI (United States)
  2. General Motors, Pontiac, MI (United States); Univ. of South Carolina, Columbia, SC (United States)
Publication Date:
Grant/Contract Number:
EE0007271
Type:
Accepted Manuscript
Journal Name:
ECS Transactions (Online)
Additional Journal Information:
Journal Name: ECS Transactions (Online); Journal Volume: 75; Journal Issue: 14; Journal ID: ISSN 1938-6737
Publisher:
Electrochemical Society
Research Org:
General Motors, Pontiac, MI (United States)
Sponsoring Org:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Fuel Cell Technologies Office (EE-3F)
Country of Publication:
United States
Language:
English
Subject:
25 ENERGY STORAGE
OSTI Identifier:
1504243

Kongkanand, Anusorn, Yarlagadda, Venkata, Garrick, Taylor R., Moylan, Thomas E., and Gu, Wenbin. (Plenary) Electrochemical Diagnostics and Modeling in Developing the PEMFC Cathode. United States: N. p., Web. doi:10.1149/07514.0025ecst.
Kongkanand, Anusorn, Yarlagadda, Venkata, Garrick, Taylor R., Moylan, Thomas E., & Gu, Wenbin. (Plenary) Electrochemical Diagnostics and Modeling in Developing the PEMFC Cathode. United States. doi:10.1149/07514.0025ecst.
Kongkanand, Anusorn, Yarlagadda, Venkata, Garrick, Taylor R., Moylan, Thomas E., and Gu, Wenbin. 2016. "(Plenary) Electrochemical Diagnostics and Modeling in Developing the PEMFC Cathode". United States. doi:10.1149/07514.0025ecst. https://www.osti.gov/servlets/purl/1504243.
@article{osti_1504243,
title = {(Plenary) Electrochemical Diagnostics and Modeling in Developing the PEMFC Cathode},
author = {Kongkanand, Anusorn and Yarlagadda, Venkata and Garrick, Taylor R. and Moylan, Thomas E. and Gu, Wenbin},
abstractNote = {Reducing the use of precious metal in a proton exchange membrane fuel cell is a key challenge in mass commercialization of fuel cell electric vehicles. However, as Pt loadings are reduced, fuel cell performance losses due to mass transport phenomena become more localized to the Pt and ionomer interface. In this paper, we provide an overview of how we use in-situ electrochemical diagnostics and modeling to understand the performance of low-Pt electrodes, identify their key limiting factors, and guide our catalyst layer development. Furthermore, diagnostics used to quantify the local-Pt oxygen transport resistance and the ionomer adsorption on the Pt surface will be discussed.},
doi = {10.1149/07514.0025ecst},
journal = {ECS Transactions (Online)},
number = 14,
volume = 75,
place = {United States},
year = {2016},
month = {8}
}