Electrocatalytic properties of Ti/Pt-IrO2 anode for oxygen evolution in PEM water electrolysis

被引：58
|
作者：
Ye, Feng [1 ]
Li, Jianling [1 ]
Wang, Xindong [1 ]
Wang, Tongtao [1 ]
Li, Shanmei [1 ]
Wei, Haojie [1 ]
Li, Qingfeng [2 ]
Christensen, Erik [2 ]
机构：
[1] Univ Sci & Technol Beijing, Dept Phys Chem, Beijing 100083, Peoples R China
[2] Tech Univ Denmark, Dept Chem, Energy & Mat Sci Grp, DK-2800 Lyngby, Denmark
来源：
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2010年 / 35卷 / 15期
关键词：
Pt-IrO2; Oxygen evolution reaction; Water electrolysis; Catalytic activity; HYDROGEN-PRODUCTION; ELECTROCHEMICAL-BEHAVIOR; TIO2; FILMS; OXIDE; IMPEDANCE; SURFACE; ELECTRODES; PLATINUM; FUEL;
D O I：
10.1016/j.ijhydene.2010.01.094
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
A novel Pt-IrO2 electrocatalyst was prepared using the dip-coating/calcinations method on titanium substrates. Titanium electrodes coated with oxides were investigated for oxygen evolution. Experimental results showed that Ti/Pt-IrO2 electrode containing 30 mol% Pt in the coating exhibited significantly higher electrocatalytic activity for oxygen evolution compared to Ti/IrO2 prepared by the same method, which is also supported by the electrochemical impedance data. Stability tests demonstrated Pt-IrO2 electrocatalyst had a service cycle of 10,000 times in 0.1 M H2SO4 solution. And the anode surface had hardly discovered cracks and had compact structures, which contributed to stable nature of the electrode together with good conductivity and specific interaction between Pt and IrO2 formed during the calcination. Furthermore, the enhanced catalytic activity for 02 evolution at Ti/Pt-IrO2 electrode is preliminarily discussed using the Mott-Schottky analysis. (C) 2010 Professor T. Nejat Veziroglu. Published by Elsevier Ltd. All rights reserved.
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页码：8049 / 8055
页数：7
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