THE ELECTROCATALYTIC ACTIVITY OF AMORPHOUS AND CRYSTALLINE NI-CO ALLOYS ON THE OXYGEN EVOLUTION REACTION

被引：54

作者：

LIAN, K ^{[1
]}

THORPE, SJ ^{[1
]}

KIRK, DW ^{[1
]}

机构：

[1] UNIV TORONTO,DEPT CHEM ENGN & APPL CHEM,TORONTO M5S 1A4,ONTARIO,CANADA

来源：

ELECTROCHIMICA ACTA | 1992年 / 37卷 / 01期

关键词：

ELECTROCATALYSTS; OXYGEN EVOLUTION; NI-CO AMORPHOUS ALLOYS;

D O I：

10.1016/0013-4686(92)80026-I

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrocatalytic behaviour of amorphous and crystalline Ni-Co alloys on the oxygen evolution reaction (OER) in 1 M KOH solution has been assessed in this work. The preoxidized amorphous Ni-Co alloys showed Tafel behaviour characteristic of Co oxides. However, after potential cycling, the electrocatalytic activity of amorphous and crystalline Ni-Co alloys increased drastically and their Tafel behaviour showed characteristics similar to pure Ni electrodes. Nickel-rich amorphous alloys showed particularly high activity towards the OER in comparison with their crystalline counterparts and the Co-rich amorphous alloy. In addition, Ni and the amorphous Ni-Co alloys showed good stability as electrocatalysts while crystalline Ni-Co alloys were not stable upon potential cycling.

引用

页码：169 / 175

页数：7

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