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Title: Characterizing Electrolyte and Platinum Interface in PEM Fuel Cells Using CO Displacement

Relatively large O 2 transport resistance at the ionomer and Pt interface has been thought to be responsible for the large performance loss at high power for a low Pt loading proton-exchange-membrane fuel cell. A facile method to characterize the interface in the fuel cell electrode is needed. In this study, the CO displacement method was explored on polycrystalline Pt and carbon-supported Pt nanoparticles. The displacement charge coverages were used to quantify the adsorption of perchlorate, sulfate, and perfluorosulfonic acid ionomer. The application of this method in a fuel cell electrode was demonstrated.
Authors:
 [1] ;  [2] ;  [2] ;  [2]
  1. General Motors Global Product Development, Pontiac, MI (United States); Univ. of South Carolina, Columbia, SC (United States)
  2. General Motors Global Product Development, Pontiac, MI (United States)
Publication Date:
Grant/Contract Number:
EE0007271
Type:
Accepted Manuscript
Journal Name:
Journal of the Electrochemical Society
Additional Journal Information:
Journal Volume: 164; Journal Issue: 2; Journal ID: ISSN 0013-4651
Publisher:
The Electrochemical Society
Research Org:
General Motors, Inc., 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:
1425405