Electrochemical behavior of carbon-nanotube/cobalt oxyhydroxide nanoflake multilayer films

被引：50

作者：

Zheng, Huajun ^{[1
,2
,3
,4
]}

Tang, Fengqiu ^{[1
,2
]}

Lim, Melvin ^{[1
,2
]}

Rufford, Thomas ^{[1
,2
]}

Mukherji, Aniruddh ^{[1
,2
]}

Wang, Lianzhou ^{[1
,2
]}

Lu, Gaoqing ^{[1
,2
]}

机构：

[1] Univ Queensland, ARC Ctr Excellence Funct Nanomat, Sch Engn, Brisbane, Qld 4072, Australia

[2] Univ Queensland, AlBN, Brisbane, Qld 4072, Australia

[3] Zhejiang Univ Technol, State Key Lab Breeding Base Green Chem Synth Tech, Hangzhou 310014, Peoples R China

[4] Zhejiang Univ Technol, Zhijiang Coll, Hangzhou 310024, Peoples R China

来源：

JOURNAL OF POWER SOURCES | 2009年 / 193卷 / 02期

基金：

浙江省自然科学基金; 澳大利亚研究理事会;

关键词：

Multilayer film; Carbon nanotube; CoOOH nanoflake; Electrostatic self-assembly; Electrodeposition; Electrochemical capacitance; MANGANESE-DIOXIDE; ELECTRODE MATERIAL; CAPACITANCE; OXIDE; PERFORMANCE; COMPOSITE;

D O I：

10.1016/j.jpowsour.2009.03.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070305 [高分子化学与物理];

摘要：

A new type of multilayer films consisting of multi-walled carbon nanotubes (MWCNTs) and cobalt oxyhydroxide nanoflakes (CoOOHNFs) are developed by alternately electrostatic self-assembly and electrodeposition technique, respectively. The successful growth of multilayer films composed of MWCNT and CoOOHNF are confirmed by scanning electron microscopy and X-ray photoelectron spectra. The multilayer film electrode is investigated for use in a supercapacitor with cyclic voltammograrns and galvanostatic charge-discharge experiments. Experimental studies reveal that coatings of MWCNT/CoOOHNF on ITO glass present excellent electrochemical capacitance with specific capacitance being 389 Fg(-1). The overall improved electrochemical behavior is accounted for the unique structure design in the multilayer films in terms of effective micro-porous nanostructure, large specific surface-area and good electrical conductance. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：930 / 934

页数：5

共 27 条

[1]

Co(OH)2-combined carbon-nanotube array electrodes for high-performance micro-electrochemical capacitors [J].