Cathodic behaviour of RuO2-doped Ni/Co3O4 electrodes in alkaline solutions: hydrogen evolution

被引：0

作者：

N. Krstajic

S. Trasatti

机构：

[1] University of Milan,Department of Physical Chemistry and Electrochemistry

来源：

Journal of Applied Electrochemistry | 1998年 / 28卷

关键词：

electrocatalysis; hydrogen evolution; mixed oxide electrodes; Co3O4; RuO2; reaction mechanism;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

RuO2-doped Co3O4 electrodes were prepared by thermal decomposition of the corresponding nitrates using Ni as a support. The RuO2 content was varied between 0 and 20mol%. The kinetics of hydrogen evolution from alkaline solution was studied by recording quasisteady state polarization curves at several NaOH concentrations. A mechanism is proposed on the basis of Tafel slopes and reaction orders. The electrocatalytic activity of the mixed oxides has been found to go through a maximum at intermediate RuO2 contents. Some evidence of instability has emerged.

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页码：1291 / 1297

页数：6

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