Preparation of ordered mesoporous nickel oxide film electrodes via lyotropic liquid crystal templated electrodeposition route

被引：100

作者：

Zhao, Dan-Dan ^{[1
]}

Xu, Mao Wen ^{[1
]}

Zhou, Wen-Ha ^{[1
]}

Zhang, Jin ^{[1
]}

Li, Hu Lin ^{[1
]}

机构：

[1] Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China

来源：

ELECTROCHIMICA ACTA | 2008年 / 53卷 / 06期

基金：

中国国家自然科学基金;

关键词：

ordered mesoporous nickel oxide film; hexagonal phase liquid crystal template; electrodeposition; annealing temperature; electrochemical capacitors (ECs);

D O I：

10.1016/j.electacta.2007.07.053

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

A novel electrochemical route to fabricate ordered mesoporous metal oxide film electrodes has been investigated with particular reference to nickel oxide. Ordered mesoporous nickel oxide films are successfully synthesized by templated electrodeposition of H-1-e nickel hydroxide and followed by heat-treatment in air at various temperatures. The films are characterized physically by thermogravimetry (TG), transmission electron microscopy (TEM) and X-ray diffraction (XRD). The applicability of this film as inexpensive and high-performance supercapacitor electrode material is demonstrated by the electrochemical characterization using cyclic voltammetry (CV) and chronopotentiometry technique. The specific capacitance of the nickel oxide film depends on the annealing temperature, showing a maximum value of 590 Fg(-1) when the as-deposited film is heat-treated at 250 degrees C for 1.5 h. (c) 2007 Published by Elsevier Ltd.

引用

页码：2699 / 2705

页数：7

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