Oxidized iridium nanodendrites as catalysts for oxygen evolution reactions

被引：62

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

页码：408 / 411

页数：4

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