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Acta Physico-Chimica Sinica  2003, Vol. 19 Issue (03): 286-288    DOI: 10.3866/PKU.WHXB20030323
Note     
Research on Nanophase MnO2 for Electrochemical Supercapacitor
Zhang Bao-Hong;Zhang Na
Department of Chemical Engineering, Harbin Engineering University,Harbin, 150001
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Abstract  The nanophase MnO2 was synthesized by solid-phase reaction as electrode material for electrochemical supercapacitor and the MnO2 electrode was tested by cyclic voltammetry(CV),electrochemical impedance spectrometry (EIS) and constant charge-discharge curves. The result shows that MnO2 electrode has good performance of faradic pseudocapacitance in 1mol•L-1 KOH between -0.1 and 0.6 V(vs Hg/HgO). The electrode can provide a specific capacitance of 240.25 to 325.21 F•g-1 at different current densities. After 5000 cycles of constant charge-discharge the capacitance reduces no more than 10%.

Key wordsSupercapacitor      MnO2 electrode      Electrode material      Specific capacitance      Cycle life     
Received: 29 July 2002      Published: 15 March 2003
Corresponding Authors: Zhang Bao-Hong     E-mail: zhangbaohong1031@sohu.com
Cite this article:

Zhang Bao-Hong;Zhang Na. Research on Nanophase MnO2 for Electrochemical Supercapacitor. Acta Physico-Chimica Sinica, 2003, 19(03): 286-288.

URL:

http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/10.3866/PKU.WHXB20030323     OR     http://www.whxb.pku.edu.cn/Jwk_wk/wlhx/Y2003/V19/I03/286

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