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

被引：57

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

页码：302 / 305

页数：4

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