Electrochemical characterisation of IrxSn1-xO2 powders as oxygen evolution electrocatalysts

被引：176

作者：

Marshall, A ^{[1
]}

Borresen, B ^{[1
]}

Hagen, G ^{[1
]}

Tsypkin, M ^{[1
]}

Tunold, R ^{[1
]}

机构：

[1] NTNU, Dept Mat Technol, Grp Electrochem, N-7491 Trondheim, Norway

来源：

ELECTROCHIMICA ACTA | 2006年 / 51卷 / 15期

关键词：

PEM water electrolysis; oxygen evolution reaction; electrocatalysis; iridium oxide; tin oxide;

D O I：

10.1016/j.electacta.2005.09.004

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The electrochemical properties and electrocatalytic performance of nanocrystalline oxide powders of the type IrxSn1-xO2 (0.2 <= x <= 1) have been examined. These oxides have been developed primarily as oxygen evolution electrocatalysts for proton exchange membrane (PEM) water electrolysers. The modified polyol method was used to prepare these oxides, by reducing precursors in ethylene glycol followed by thermal oxidation at 500 degrees C. The materials were characterised in 0.5 mol dm(-3) H2SO4 and PEM electrolytes by cyclic voltammetry, electrochemical impedance spectroscopy, and steady state polarisation measurements. Some comparisons were made between the electrochemical properties of the oxides in the different electrolytes. (c) 2005 Elsevier Ltd. All rights reserved.

引用

页码：3161 / 3167

页数：7

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