Polyaniline-MnO2 composite electrode for high energy density electrochemical capacitor

被引：66

作者：

Prasad, KR ^{[1
]}

Miura, N

机构：

[1] Kyushu Univ, Art Sci & Technol Ctr Cooperat Res, Kasuga, Fukuoka 8168580, Japan

[2] Japan Sci & Technol Agcy, Kawaguchi, Saitama 3320012, Japan

来源：

ELECTROCHEMICAL AND SOLID STATE LETTERS | 2004年 / 7卷 / 11期

关键词：

D O I：

10.1149/1.1805504

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Nanostructured manganese dioxide (MnO(2)) was potentiodynamically deposited on polyaniline (PANI) matrix at a scan rate of 200 mV s(-1). The composite electrode of PANI and MnO(2) (PANI-MnO(2)) was characterized in 0.1 M Na(2)SO(4) for electrochemical supercapacitors. Optimization of thickness of the PANI film and the amount of MnO(2) deposition were necessary to realize large specific capacitance values. A specific capacitance of 715 F g(-1) and an energy density of about 200 Wh kg(-1) was obtained at a charge/discharge current density of 5 mA cm(-2), based on the combined mass of PANI-MnO(2). Long stability of the composite material was demonstrated. (C) 2004 The Electrochemical Society.

引用

页码：A425 / A428

页数：4

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