Vacuum evaporated thin films of mixed cobalt and nickel oxides as electrocatalyst for oxygen evolution and reduction

被引：91

作者：

Rashkova, V

Kitova, S

Konstantinov, I

Vitanov, T

机构：

[1] Bulgarian Acad Sci, Cent Lab Electrochem Power Sources, Sofia 1113, Bulgaria

[2] Bulgarian Acad Sci, Cent Lab Electrochem Power Sources, Sofia 1113, Bulgaria

来源：

ELECTROCHIMICA ACTA | 2002年 / 47卷 / 10期

关键词：

oxygen reduction; oxygen evolution; electrocatalysts; cobalt and nickel oxides;

D O I：

10.1016/S0013-4686(01)00897-0

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Mixed cobalt and nickel oxides, obtained by vacuum coevaporation of Co, Ni and TeO2 are investigated as electrocatalysts for oxygen reduction and evolution reaction. Gas-diffusion bifunctional oxygen electrodes (GDE) are prepared by direct deposition of catalyst on gas-supplying membrane. Thus obtained GDE with different atomic ratio R-Co/Ni and R(Co+Ni)/Te of the catalyst are electrochemically tested by means of steady-state voltammetry. It is shown that the films exhibit high catalytic activity toward both oxygen reduction and evolution reactions despite very small catalyst loading of about 0.07 mg cm(-2). (C) 2002 Elsevier Science Ltd. All rights reserved.

引用

页码：1555 / 1560

页数：6

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