STUDY OF THE KINETICS OF HYDROGEN EVOLUTION REACTION ON RANEY-NICKEL COMPOSITE-COATED ELECTRODE BY AC IMPEDANCE TECHNIQUE

被引：136

作者：

CHOQUETTE, Y ^{[1
]}

BROSSARD, L ^{[1
]}

LASIA, A ^{[1
]}

MENARD, H ^{[1
]}

机构：

[1] UNIV SHERBROOKE,DEPT CHIM,SHERBROOKE J1K 2R1,QUEBEC,CANADA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1990年 / 137卷 / 06期

关键词：

D O I：

10.1149/1.2086788

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The hydrogen evolution reaction on the Raney nickel composite-coated electrode is investigated in 1.04M NaOH aqueous solution at 70°C by ac impedance technique. In case of the chemically activated electrode material, the easiest pathway for the hydrogen evolution reaction (HER) is the Volmer-Tafel mechanism, and the controlling step is the Volmer reaction with a small contribution of the Heyrovsky reaction. The electrode material becomes more electrocatalytic towards the HER after an electrochemical activation. In this case, the easiest pathway for the HER is the Volmer-Heyrovsky mechanism, both steps being rate-controlling. © 1990, The Electrochemical Society, Inc. All rights reserved.

引用

页码：1723 / 1730

页数：8

共 20 条

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