期刊
ELECTROCHEMISTRY COMMUNICATIONS
卷 8, 期 5, 页码 827-832出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.elecom.2006.02.027
关键词
MnO2; carbon nanotubes; composites; electrochemical property; supercapacitors; neutral electrolyte
资金
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [0753462] Funding Source: National Science Foundation
Long cycle performance at a high charge-discharge current of 2 A/g for the amorphous MnO2 (a-MnO2) and single walled carbon nanotubes (SWNTs) composites have been studied for the first time. The a-MnO2 and SWNT composites have been successfully synthesized via a novel room temperature route starting with KMnO4, ethanol and commercial SWNTs. Homogeneity of the synthesized composites was established by electron microscopic studies. Electrochemical properties of the synthesized composites were elucidated by cyclic voltammetry, galvanostatic charge-discharge and electrochemical impedance spectroscopy. All the composites with different SANT loads showed excellent cycling capability, even at the high current of 2 A/g, with the MnO2:20 wt% SWNT composite showing the best combination of coloumbic efficiency of 75% and specific capacitance of 110 F/g after 750 cycles. However, the composite with 5 wt% SWNTs showed the highest specific capacitance during initial cycles. (c) 2006 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据