Manganese oxide/MWNTs composite electrodes for supercapacitors

被引：208

作者：

Wang, GX ^{[1
]}

Zhang, BL ^{[1
]}

Yu, ZL ^{[1
]}

Qu, MZ ^{[1
]}

机构：

[1] Chinese Acad Sci, Chengdu Inst Organ Chem, Grad Sch, Chengdu 610041, Peoples R China

来源：

SOLID STATE IONICS | 2005年 / 176卷 / 11-12期

关键词：

manganese oxide; carbon nanotubes; composite electrode; supercapacitors;

D O I：

10.1016/j.ssi.2005.02.005

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Manganese oxide/multiwalled carbon nanotubes (MWNTs) composite was prepared by mixing manganese oxide and MWNTs through a means of ultrasonic vibration in ethanol solution. A nonaqueous hybrid supercapacitor using manganese oxide/MWNTs (M/M) composite and MWNTs as positive and negative electrodes, respectively, has been designed and investigated by constant current charge/discharge tests. The asymmetric hybrid capacitor has better capacitance and energy characteristics than those of the symmetric ones based on individual M/M composite and MWNTs electrodes. The energy density of the hybrid capacitor can reach 32.91 W h/kg even at a current density of 10 mA/cm cm(2) in 1.0 M LiClO4 electrolyte, which is comparable to that of a manganese oxide/activated carbon hybrid capacitor. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：1169 / 1174

页数：6

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