Fuel Cell Durability Enhancement with Cerium Oxide under Combined Chemical and Mechanical Membrane Degradation

被引：59

作者：

Lim, C. ^{[1
]}

Alavijeh, A. Sadeghi ^{[1
]}

Lauritzen, M. ^{[2
]}

Kolodziej, J. ^{[2
]}

Knights, S. ^{[2
]}

Kjeang, E. ^{[1
]}

机构：

[1] Simon Fraser Univ, Sch Mechatron Syst Engn, Surrey, BC V3T 0A3, Canada

[2] Ballard Power Syst, Burnaby, BC V5J 5J8, Canada

来源：

ECS ELECTROCHEMISTRY LETTERS | 2015年 / 4卷 / 04期

基金：

加拿大自然科学与工程研究理事会;

关键词：

POLYMER ELECTROLYTE MEMBRANES; CATALYST COATED MEMBRANES; FREE-RADICAL SCAVENGER; MITIGATION;

D O I：

10.1149/2.0081504eel

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A CeO2 supported membrane electrode assembly (MEA) was fabricated by hot-pressing CeO2-coated electrodes and a PFSA ionomer membrane. Upon application of a combined chemical and mechanical accelerated stress test (AST), the CeO2 supported MEA showed six times longer lifetime and 40 times lower fluoride emission rate than a baseline MEA without cerium. The membrane in the CeO2 supported MEA effectively retained its original thickness and ductility despite the highly aggressive AST conditions. Most of the cerium applied on the anode migrated into the membrane and provided excellent mitigation of joint chemical and mechanical membrane degradation. (C) The Author(s) 2015. Published by ECS.

引用

页码：F29 / F31

页数：3

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