Preparation and electrochemical performances of α-MnO2 nanorod for supercapacitor

被引：124

作者：

Li, Yang ^{[1
]}

Xie, Huaqing ^{[1
]}

Wang, Jifeng ^{[1
]}

Chen, Lifei ^{[1
]}

机构：

[1] Shanghai Second Polytech Univ, Sch Urban Dev & Environm Engn, Shanghai 201209, Peoples R China

来源：

MATERIALS LETTERS | 2011年 / 65卷 / 02期

关键词：

alpha-MnO2; Nanocrystalline materials; Supercapacitors; Energy storage and conversion; MNO2;

D O I：

10.1016/j.matlet.2010.10.048

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

alpha-MnO2 nanorod was prepared by chemical precipitation with surfactant as the structure-directing agent and subsequent heat treatment at 800 degrees C. The morphology and structure of the prepared alpha-MnO2 were investigated by transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD). It was revealed that the alpha-MnO2 nanorod was successfully synthesized without impurities and the diameter of the nanorod was less than 50 nm. In cyclic voltammetry and galvanostatical discharge-charge test, the alpha-MnO2 nanorod showed regular capacitive behaviors and good cycling stabilities and delivered a maximum capacitance of 166.2 F/g, which indicated that the alpha-MnO2 nanorod was a potential good electrode material for supercapacitor application. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：403 / 405

页数：3

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