文献类型： 外文期刊

作者： Lv, Guifen ¹ ; Wu, Dingcai ¹ ; Fu, Ruowen ¹ ;

作者机构： 1.Sun Yat Sen Univ, Inst Mat Sci, PCFM Lab, Sch Chem & Chem Engn, Guangzhou 510275, Guangdong, Peoples R China

2.Jiangxi Acad Agr Sci, Soil & Fertilizer & Resources & Environm Inst, Nanchang 330200, Peoples R China

3.Sun Yat Sen Univ, Inst Optoelect & Funct Composite Mat, Guangzhou 510275, Guangdong, Peoples R China

关键词： Electrochemical properties;Porosity

期刊名称：JOURNAL OF NON-CRYSTALLINE SOLIDS （ 影响因子：3.531； 五年影响因子：3.208 ）

ISSN： 0022-3093

年卷期： 2009 年 355 卷 50-51 期

页码：

收录情况： SCI

摘要： The nano-sized amorphous alpha-MnO2-dispersed carbon aerogels (CAs) were prepared by liquid phase co-precipitation technique. Different MnO2 contents and heating temperatures were taken to prepare the composites. The composites prepared were used to make electrodes of electrochemical supercapacitors. Electrochemical properties of the electrodes were studied by cyclic voltammetry and galvanostatic charge-discharge. The specific capacitances of the MnO2-dispersed CAs and the nano-MnO2 ingredient in the composite are up to 219 F g(-1) and 401 F g(-1) at 5 mA.cm(-2), 1.6 times and 5.0 times greater than that of neat CA and MnO2, respectively. (C) 2009 Published by Elsevier B.V.