Open Pore Architecture of an Ordered Mesoporous IrO2 Thin Film for Highly Efficient Electrocatalytic Water Oxidation

被引：37
|
作者：
Chandra, Debraj [1 ]
Abe, Naoto [1 ]
Takama, Daisuke [1 ]
Saito, Kenji [1 ]
Yui, Tatsuto [1 ]
Yagi, Masayuki [1 ,2 ]
机构：
[1] Niigata Univ, Dept Mat Sci & Technol, Fac Engn, Niigata 9502181, Japan
[2] Japan Sci & Technol Agcy JST, Precursory Res Embryon Sci PRESTO, Kawaguchi, Saitama 3320012, Japan
来源：
CHEMSUSCHEM | 2015年 / 8卷 / 05期
关键词：
electrocatalysis; iridium oxide; mesoporous materials; nanostructure engineering; water oxidation; OXYGEN EVOLUTION REACTION; IRIDIUM; ELECTRODES; CRYSTALLIZATION; PERFORMANCE; DEPOSITION; CATALYST; STORAGE;
D O I：
10.1002/cssc.201402911
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
We report the first accessible channel-like open pore architecture of ordered 2D hexagonal mesoporous IrO2 films and its utilization as an efficient anode for electrocatalytic water oxidation. A well-ordered mesostructure of circa 7nm pores were obtained by a facile one-pot soft-templating strategy, employing a [Ir(OH)(6)](2-) precursor stabilized by a triblock copolymer PluronicF127 as a pore-directing template. A mesoporous IrO2 film calcined at 400 degrees C (approximate to 70nm thick) affords a high surface area of 512m(2)cm(-3) and 2times higher O-2 evolution during the electrocatalytic water oxidation relative to an untemplated IrO2 coating film.
引用
收藏
页码：795 / 799
页数：5
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