Electrodeposited Ni-Co-oxide electrodes: characterization and kinetics of the oxygen evolution reaction

被引：134

作者：

Castro, EB ^{[1
]}

Gervasi, CA ^{[1
]}

机构：

[1] Natl Univ La Plata, Inst Invest Fisicoquim Teor & Aplicadas, INIFTA, RA-1900 La Plata, Argentina

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2000年 / 25卷 / 12期

关键词：

oxygen evolution reaction; cobalt oxides; anodic catalysts;

D O I：

10.1016/S0360-3199(00)00033-1

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：

In this paper we present results on the characterization of Ni-Co-oxide electrodes, prepared by anodic deposition from Co(NO3)(2) aqueous solutions on Ni substrates. The kinetics and mechanism of oxygen evolution was analysed. Tafel slopes close to 40 mV per decade were measured. The reaction order with respect to [OH-] was found to be approximately 2 at 25 degreesC. A possible mechanism for oxygen evolution on these electrodes is presented, which accounts for the values of the kinetic parameters experimentally obtained. (C) 2000 International Association for Hydrogen Energy. Published by Elsevier Science Ltd. All rights reserved.

引用

页码：1163 / 1170

页数：8

共 19 条

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