Performances of high voltage electrochemical capacitor using ball-milled graphite/Mn3O4 composite electrodes

被引：17

作者：

Cao, Jianyun ^{[1
]}

Wang, Yaming ^{[1
]}

Zhou, Yu ^{[1
]}

Jia, Dechang ^{[1
]}

Ouyang, Jia-Hu ^{[1
]}

Guo, Lixin ^{[1
]}

机构：

[1] Harbin Inst Technol, Inst Adv Ceram, Harbin 150001, Peoples R China

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2012年 / 682卷

关键词：

Graphite; Manganese oxide; Composite; Electrochemical capacitor; High voltage; BIRNESSITE MNO2; MN3O4; STORAGE; SUPERCAPACITORS; CONVERSION;

D O I：

10.1016/j.jelechem.2012.06.022

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A novel ball-milled graphite/Mn3O4 composite has been prepared directly through the reaction between high-energy ball-milled graphite and potassium permanganate under microwave irradiation. The microstructure and morphology of the composite have been investigated by X-ray diffraction and transmission electron microscopy. Three-electrode investigations show that the ball-milled graphite/Mn3O4 composite has a high potential window (Delta E = 1.9 V) in 1 M Na2SO4 aqueous solution. A symmetric electrochemical capacitor has been built using graphite/Mn3O4 composite with 1 M Na2SO4. This system exhibits ideal supercapacitive properties and stable cycle behavior while the cell voltage is set to as high as 1.8 V. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：23 / 28

页数：6

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