Nanocrystalline manganese oxides for electrochemical capacitors with neutral electrolytes

被引：336

作者：

Jeong, YU ^{[1
]}

Manthiram, A ^{[1
]}

机构：

[1] Univ Texas, Mat Sci & Engn Program, Austin, TX 78712 USA

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 2002年 / 149卷 / 11期

关键词：

D O I：

10.1149/1.1511188

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

With an objective to develop inexpensive electrode materials for electrochemical redox capacitors, nanocrystalline manganese oxides have been synthesized by reducing aqueous KMnO4 solution with various reducing agents such as potassium borohydride, sodium dithionite, sodium hypophosphite, and hydrochloric acid under various controlled pH conditions. The products have been characterized by X-ray diffraction, thermogravimetric analysis, surface area measurements, and cyclic voltametry in various neutral electrolytes such as aqueous NaCl, KCl, LiCl, and Na2SO4. Optimized samples exhibit specific capacitance values of around 250 F/g in the range of 0-1 V vs. SCE with excellent cyclability in 2 M NaCl electrolyte. (C) 2002 The Electrochemical Society.

引用

页码：A1419 / A1422

页数：4

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