Oxidized iridium nanodendrites as catalysts for oxygen evolution reactions

被引：60
作者：
Lee, Woong Hee [1 ]
Kim, Hansung [1 ]
机构：
[1] Yonsei Univ, Dept Chem & Biomol Engn, Seoul 120749, South Korea
来源：
CATALYSIS COMMUNICATIONS | 2011年 / 12卷 / 06期
基金：
新加坡国家研究基金会;
关键词：
Iridium; Dendrite; Oxygen evolution reaction; Water electrolysis; SOLID POLYMER ELECTROLYTE; WATER ELECTROLYSIS; ELECTROOXIDATION; OXIDE; REDUCTION; RHODIUM;
D O I：
10.1016/j.catcom.2010.11.003
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：
Iridium nanodendrites were synthesized using tetradecyltrimethyl ammonium bromide (TTAB) as an organic capping agent, and the electrocatalytic activity toward oxygen evolution reaction (OER) was evaluated. X-ray photoelectron spectroscopy revealed that an anodically grown iridium oxide film was created on the Ir dendrite through a repeated potential sweep between 0.04 and 1.54 V vs. SHE. The highly branched structure of the Ir dendrites with a particle size of similar to 10 nm provides an increased active facet area that is available for OER in comparison to a commercial Ir catalyst, resulting in enhanced activity toward OER. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：408 / 411
页数：4
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