Low temperature hydrothermal synthesis of nano-sized manganese oxide for supercapacitors

被引：56
|
作者：
Liu, Jing-Liang [1 ]
Fan, Li-Zhen [1 ]
Qu, Xuanhui [1 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
来源：
ELECTROCHIMICA ACTA | 2012年 / 66卷
基金：
中国国家自然科学基金;
关键词：
Manganese oxide; Supercapacitors; Hydrothermal synthesis; Nano-structure; Specific capacitance; ELECTROCHEMICAL PROPERTIES; MNO2; GROWTH; RUO2;
D O I：
10.1016/j.electacta.2012.01.095
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The nano-structured manganese oxide was synthesized by a simple hydrothermal route at a very low temperature of 60 degrees C using potassium permanganate as oxidant and ethanol as reductant. The structure and surface morphology of the as-prepared manganese oxide were characterized by means of X-ray diffraction and scanning electron microscopy. The obtained manganese oxide was of amorphous and spherical with a particle size of about 100 nm. The capacitive characteristics of the nano-structured manganese oxide electrodes were investigated by means of cyclic voltammetry and galvanostatic charge-discharge cycling in 1 M Na2SO4. The manganese oxide exhibited not only a maximum specific capacitance of 198 Fg(-1), but also excellent rate capability and good cycle stability. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：302 / 305
页数：4
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