Journal
ECS ELECTROCHEMISTRY LETTERS
Volume 3, Issue 4, Pages F19-F22Publisher
ELECTROCHEMICAL SOC INC
DOI: 10.1149/2.008404eel
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Funding
- U.S. DOE, Energy Efficiency and Renewable Energy, Fuel Cell Technologies Office and Technology Development Manager Nancy Garland
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Component durability of polymer-electrolyte membrane (PEM) fuel cells can be improved by adding cerium cations, which serve to scavenge harmful free radicals and selectively decompose hydrogen peroxide, which are formed during the oxidation reduction reaction (ORR). We have investigated the change in distribution of cerium cations in a hydrogen fuel cell as a function of operating time, considering both cerium containing membranes (commercial XL by DuPont) as well as fuel cells with CeO2 in the cathode catalyst layer. Our results show cerium cations are very mobile in Nafion, and migrate into both the anode and cathode catalyst layers. (C) 2014 The Electrochemical Society. All rights reserved.
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