Formation and characterization of multi-walled carbon nanotubes/Co3O4 nanocomposites for supercapacitors

被引：121

作者：

Shan, Yan ^{[1
]}

Gao, Lian ^{[1
]}

机构：

[1] Chinese Acad Sci, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2007年 / 103卷 / 2-3期

基金：

中国国家自然科学基金;

关键词：

fullerenes; composite materials; electrochemical properties;

D O I：

10.1016/j.matchemphys.2007.02.038

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel type of multi-walled carbon nanotubes (MWNTS)/CO3O4 composite electrode for supercapacitors has been prepared through a facile and effective method, which combined the acid treatment of MWNTs and in situ decomposition of Co(NO3)(2) in n-hexanol solution at 140 degrees C. The samples are characterized by TEM, XRD and electrochemical testing, respectively. The MWNTs/Co3O4 composites show high capacitor property, and their best specific capacitance is up to 200.98 Fg(-1), which is significantly greater than that of pure MWNTs (90.1 Fg(-1)). With different MWNTs contents, they show Faradaic redox capacitive behavior to double-layer capacitive behavior, which may be due to the different microstructure of the composites. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：206 / 210

页数：5

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