CO tolerance effects of tungsten-based PEMFC anodes

被引：56
作者：
Pereira, Luis Gustavo S. [1 ]
dos Santos, Fatima R. [1 ]
Pereira, Maristela E. [1 ]
Paganin, Valdecir A. [1 ]
Ticianelli, Edson A. [1 ]
机构：
[1] Univ Sao Paulo, Inst Quim Sao Carlos, Dept Quim Fis, BR-13560970 Sao Carlos, SP, Brazil
来源：
ELECTROCHIMICA ACTA | 2006年 / 51卷 / 19期
基金：
巴西圣保罗研究基金会;
关键词：
PtWOx/C catalyst; phosphotungstic acid; PEMFC; CO oxidation;
D O I：
10.1016/j.electacta.2005.11.025
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The performance of proton exchange membrane fuel cells (PEMFC) fed with CO-contaminated hydrogen was investigated for anodes with PtWOx/C and phosphotunptic acid (PTA) impregnated Pt/C electrocatalysts. A quite high performance was achieved for the PEMFC fed with H-2 + 100 ppm CO with anodes containing 0.4 mg PtWo(x) cm(-2) and also for those with 0.4 Mg Pt cm(-2) impregnated with ca. 1 mg PTA cm(-2). A decay of the single cell performance with time is observed, and this was attributed to an increase of the membrane resistance due to the polymer degradation promoted by the crossover of the tungsten species throughout the membrane. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：4061 / 4066
页数：6
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