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

被引：36

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

页码：795 / 799

页数：5

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