Single-crystal α-MnO2 nanorods:: synthesis and electrochemical properties

被引：194
|
作者：
Wang, Hongen [1 ]
Lu, Zhouguang
Qian, Dong
Li, Yujie
Zhang, Wei
机构：
[1] Cent S Univ, Coll Chem & Chem Engn, Changsha 410083, Peoples R China
[2] State Key Lab Powder Met, Changsha 410083, Peoples R China
来源：
NANOTECHNOLOGY | 2007年 / 18卷 / 11期
关键词：
D O I：
10.1088/0957-4484/18/11/115616
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Single-crystal alpha-MnO2 nanorods were prepared by hydrothermal reaction of single KMnO4 under acidic conditions. The nanorods have a diameter of 30-70 nm and a length up to 2 mu m. The formation mechanism for the alpha-MnO2 nanorods was investigated. Electrochemical properties of the MnO2 nanomaterials prepared for different hydrothermal times were characterized by galvanostatic charge/discharge tests and cyclic voltammetry ( CV) studies. The results indicate that the MnO2 nanorods prepared for 5 and 8 h show fine capacitive behaviour with high specific capacitances of 71.1 and 70.9 F g(-1), respectively.
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页数：5
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