Effect of the partial replacement of Ni or Co by Cu on the electrocatalytic activity of the NiCo2O4 spinel oxide

被引：91

作者：

Tavares, AC ^{[1
]}

Cartaxo, MAM ^{[1
]}

Pereira, MID ^{[1
]}

Costa, FM ^{[1
]}

机构：

[1] Fac Ciencias Lisboa, Dept Quim & Bioquim, CITECMAT, P-1700 Lisbon, Portugal

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1999年 / 464卷 / 02期

关键词：

Ni-Co-Cu oxides; spinel; oxygen evolution; X-ray photoelectron spectroscopy;

D O I：

10.1016/S0022-0728(99)00018-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A comparative study of Ni1-xCuxCo2O4 and NiCo2-yCuyO4 systems derived from the NiCo2O4 spinel oxide by the partial replacement of Ni or Co by Cu respectively, has been performed. The two systems have been prepared by thermal decomposition of aqueous nitrate solutions, on nickel supports, at 623 K. The influence of the amount of copper on the electrode performance towards the oxygen evolution process is studied. Steady state measurements followed by Tafel analysis has been done. The electrochemical results have been correlated with the surface composition of the electrodes by means of X-ray photoelectron spectroscopy. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：187 / 197

页数：11

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