OXYGEN EVOLUTION REACTION ON THE IRIDIUM ELECTRODE IN BASIC-MEDIUM STUDIED BY ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY

被引：26

作者：

FERRER, JE ^{[1
]}

VICTORI, L ^{[1
]}

机构：

[1] CETS,INST QUIM SARRIA,E-08017 BARCELONA,SPAIN

来源：

ELECTROCHIMICA ACTA | 1994年 / 39卷 / 04期

关键词：

OXYGEN EVOLUTION REACTION; IRIDIUM ELECTRODE; ELECTROCHEMICAL IMPEDANCE SPECTROSCOPY; IRIDIUM OXIDES; ELECTROCATALYSIS;

D O I：

10.1016/0013-4686(94)80104-5

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The oxygen evolution reaction was studied by electrochemical impedance spectroscopy in basic medium. The experimental spectra show two faradaic time constants. The appearance of these two time constants led us to propose a reaction mechanism with two intermediate iridium oxides. A theoretical model to account for the electrochemical impedance of the proposed model was developed. This model reproduces the features of the experimental spectra. Therefore, it can be concluded that, probably, the oxygen evolution reaction follows the proposed mechanism.

引用

页码：581 / 588

页数：8

共 25 条

[1]

APPLEBY AJ, 1975, J ELECTROANAL CHEM, V60, P101

[2] BEHAVIOR OF OVERPOTENTIAL DEPOSITED SPECIES IN FARADAIC REACTIONS .2. AC IMPEDANCE MEASUREMENTS ON H-2 EVOLUTION KINETICS AT ACTIVATED AND UNACTIVATED PT CATHODES [J].