Electrochemical characteristics of Pt-WO3/C and Pt-TiO2/C electrocatalysts in a polymer electrolyte fuel cell

被引：281
|
作者：
Shim, J [1 ]
Lee, CR
Lee, HK
Lee, JS
Cairns, EJ
机构：
[1] Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA
[2] Woosuk Univ, Dept Chem Engn, Chunbook, South Korea
[3] Hanyang Univ, Dept Ind Chem, Seoul 133791, South Korea
来源：
JOURNAL OF POWER SOURCES | 2001年 / 102卷 / 1-2期
基金：
新加坡国家研究基金会;
关键词：
polymer electrolyte fuel cell; tungsten oxide; titanium oxide; electrocatalyst;
D O I：
10.1016/S0378-7753(01)00817-5
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The electrochemical characteristics and the catalytic activity, of Pt-tungsten oxide and Pt-titanium, oxide catalysts in polymer electrolyte fuel cell were investigated by cyclic voltammetry and in fuel cells. Fuel cell performances for those catalysts at 80 degreesC with, humidified hydrogen and oxygen increased with increasing added oxide content in the catalysts up to a certain content. Adsorption characteristics for hydrogen and oxygen on the surface of platinum were greatly influenced by added oxide content in the catalysts. It was, also obtained that the electrochemically active surface area of these catalysts was influenced by their oxide content. (C) 2001 Elsevier Science B.V. All rights reserved.
引用
收藏
页码：172 / 177
页数：6
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