Electrochemically dispersed nickel oxide nanoparticles on multi-walled carbon nanotubes

被引：15

作者：

Wen, Bohua ^{[1
]}

Zhang, Shichao ^{[1
]}

Fang, Hua ^{[1
]}

Liu, Wenbo ^{[1
]}

Du, Zhijia ^{[1
]}

机构：

[1] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2011年 / 131卷 / 1-2期

基金：

中国国家自然科学基金;

关键词：

Composite materials; Electrochemical techniques; Microporous materials; Nanostructures; METAL-OXIDES; SUPERCAPACITORS; CAPACITANCE; ELECTRODES; SPECTROSCOPY; COMPOSITES; STORAGE; SURFACE; FILMS;

D O I：

10.1016/j.matchemphys.2011.09.051

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It is the first report that the uniformly dispersed nickel oxide nanoparticles were synthesized on the substrates of multi-walled carbon nanotubes (MWNT) via electrochemical technique. The morphology and chemical state of the NiO(x)/MWNT composite were characterized using scanning electron microscopy and X-ray photoelectron spectroscopy. The electrochemical test results revealed that the surface-decorated composite with oxide particle sizes of 15-30 nm can deliver specific capacitance about 190 Fg(-1), tenfold greater than that of pure MWNT. Meanwhile, the electrode displayed excellent cycling stability with nearly 100% coulombic efficiency over 1000 cycles and good rate capability with acceptable specific capacitance fading, indicating that this novel nanostructured composite electrode was a promising candidate for electrochemical capacitors. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：8 / 11

页数：4

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