Preparation of hexagonal nanoporous nickel hydroxide film and its application for electrochemical capacitor

被引:259
作者
Zhao, Dan-Dan [1 ]
Bao, Shu-Juan [1 ]
Zhou, Wen-Ha [1 ]
Li, Hu-Lin [1 ]
机构
[1] Lanzhou Univ, Coll Chem & Chem Engn, Lanzhou 730000, Peoples R China
基金
中国国家自然科学基金;
关键词
nanoporous nickel hydroxide film; hexagonal lyotropic liquid crystal template; electrodeposition; electrochemical capacitors (ECs); LIQUID-CRYSTALLINE PHASES; OXIDE; MANGANESE; ELECTRODE; SUPERCAPACITOR; DEPOSITION; STORAGE; SURFACE;
D O I
10.1016/j.elecom.2006.11.030
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
Nanoporous nickel hydroxide film has been successfully electrodeposited on titanium substrate from nickel nitrate dissolved in the aqueous domains of the hexagonal lyotropic liquid crystalline phase of Brij 56. Low-angle X-ray diffraction (XRD), transmission electron microscopy (TEM), and atomic force microscopy (AFM) studies show that the film has a regular nanostructure consisting of a hexagonal array of cylindrical pores with a repeat center-to-center spacing of about 7 nm. Preliminary electrochemical studies are carried out using cyclic voltammetry (CV) and chronopotentiometry technology. A maximum specific capacitance of 578 F g(-1) could be achieved for the nanoporous Ni(OH)(2) film electrode, suggesting its potential application in electrochemical capacitors. (c) 2006 Elsevier B.V. All rights reserved.
引用
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页码:869 / 874
页数:6
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