Silver-carbon electrocatalyst for air cathodes in alkaline fuel cells

被引：52

作者：

Gamburzev, S ^{[1
]}

Petrov, K ^{[1
]}

Appleby, AJ ^{[1
]}

机构：

[1] Texas A&M Univ, Ctr Electrochem Syst & Hydrogen Res, Texas Engn Expt Stn, College Stn, TX 77843 USA

来源：

JOURNAL OF APPLIED ELECTROCHEMISTRY | 2002年 / 32卷 / 07期

关键词：

air cathode; alkaline fuel cell; carbon; electrocatalyst; silver;

D O I：

10.1023/A:1020122004048

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A method for producing electrocatalysts containing silver supported on different carbons was developed. The catalysts were investigated in air (oxygen) diffusion electrodes in alkaline electrolyte (7 M KOH). Depending on the carbon support used, up to a threefold improvement in electrode performance was achieved compared with the activity of the uncatalysed carbon in this media. At ambient temperature and atmospheric pressure, a current density of 150 mA/cm(-2) was obtained at electrode potential 1.2 V vs zinc (0.75 vs HE). A correlation between electro catalytic activity and wetted surface area of the electrocatalysts was found.

引用

页码：805 / 809

页数：5

共 18 条

[1] RING-DISK ELECTRODE STUDY OF REDUCTION OF OXYGEN ON ACTIVE-CARBON IN ALKALINE-SOLUTION [J].