期刊
ELECTROCHIMICA ACTA
卷 54, 期 26, 页码 6250-6256出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2009.05.090
关键词
Water electrolysis; Solid polymer electrolyte; Oxygen evolution reaction; IrxRu1-xO2 oxides; Anodic electrocatalyst
资金
- National Research and Development Program of China (863 Program) [2007AA11A106, 2007AA05Z129]
Electrocatalysts of the general formula IrxRu1-xO2 were prepared using Adams' fusion method. The crystallite characterization was examined via XRD, and the electrochemical properties were examined via cyclic voltammetry (CV) in, linear sweep voltammetry (LSV) and chronopotentiometry measurements in 0.5 M H2SO4. The electrocatalysts were applied to a membrane electrode assembly (MEA) and studied in situ in an electrolysis cell through electrochemical impedance spectroscopy (EIS) and stationary current density-potential relations were investigated. The IrxRu1-xO2 (x = 0.2, 0.4, 0.6) compounds were found to be more active than pure IrO2 and more stable than pure RuO2. The most active electrocatalyst obtained had a composition of Ir0.2Ru0.8O2. With an Ir0.2Ru0.8O2 anode, a 28.4% Pt/C cathode and the total noble metal loading of 1.7 mg cm(-2), the potential of water electrolysis was 1.622 V at 1 A cm(-2) and 80 degrees C. (C) 2009 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据