STUDY OF THE KINETICS OF HYDROGEN EVOLUTION REACTION ON NICKEL-ZINC POWDER ELECTRODES

被引：150
作者：
CHEN, LL
LASIA, A
机构：
[1] Departement de chimie, Université de Sherbrooke, Sherbrooke, Québec
来源：
JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1992年 / 139卷 / 11期
关键词：
D O I：
10.1149/1.2069055
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The electrodes prepared by pressing Ni and Zn powders (50%-100% Ni) at room temperature were studied for the hydrogen evolution reaction in 1M NaOH after leaching out zinc in 30% NaOH. Although the exchange current densities of these electrodes are similar, the Tafel slopes and eta250 decrease with the decrease in the nickel content as the surface roughness increases. The mechanism and kinetics of the HER were studied using the ac impedance technique. It was found that this reaction proceeds via Volmer-Heyrovsky mechanism, and the kinetic parameters were determined.
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页码：3214 / 3219
页数：6
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