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

被引：84
作者：
Garrick, Taylor R. [1 ,2 ]
Moylan, Thomas E. [1 ]
Yarlagadda, Venkata [1 ]
Kongkanand, Anusorn [1 ]
机构：
[1] Gen Motors Global Product Dev, Fuel Cell Activ, Pontiac, MI 48340 USA
[2] Univ South Carolina, Dept Chem Engn, Columbia, SC 29208 USA
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2017年 / 164卷 / 02期
关键词：
OXYGEN REDUCTION REACTION; CHARGE DISPLACEMENT; TRANSPORT; ADSORPTION; IONOMER; CONFINEMENT; PT(111); IMPACT; MICROBALANCE; RESISTANCE;
D O I：
10.1149/2.0551702jes
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
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. (C) The Author(s) 2016. Published by ECS. All rights reserved.
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收藏
页码：F60 / F64
页数：5
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