Electrochemical Capacitance of MnO_2 /PANI Composite

Authors

Xiao-cun XU, College of Chemistry and Chemical engineering,Central South University,Changsha 410083,Hunan,China;
Kai-yu LIU, College of Chemistry and Chemical engineering,Central South University,Changsha 410083,Hunan,China;
Zhi-gang YIN, College of Chemistry and Chemical engineering,Central South University,Changsha 410083,Hunan,China;
Zhe SUN, College of Chemistry and Chemical engineering,Central South University,Changsha 410083,Hunan,China;
Geng SU, College of Chemistry and Chemical engineering,Central South University,Changsha 410083,Hunan,China;

Corresponding Author

Kai-yu LIU

Abstract

Nano-MnO2 was prepared by using P123 as a soft template.The MnO2 /polyaniline composite was further prepared by polymerization of aniline with the nano-MnO2 in acidic conditions and was investigated by XRD and IR.The morphology of nano-MnO2 observed by SEM was changed with the introduction of aniline.The electrochemical properties of MnO2 /PANI electrode were investigated using cyclic voltammetry,galvanostatic charge-discharge and electrochemical impedance spectroscopy.The specific capacitance of MnO2 /PANI electrode could reach as high as 190.8 F·g-1,which decayed only 4.7% over 500 cycles.And the coulombic efficiency has been maintained at above 97%.

Keywords

MnO2, polyaniline, composites, supercapacitor, electrochemical property soft-template

DOI Link

https://doi.org/10.61558/2993-074X.2046

Publication Date

2010-02-28

Online Available Date

2010-02-28

Revised Date

2010-02-28

Received Date

2010-02-28

Recommended Citation

Xiao-cun XU, Kai-yu LIU, Zhi-gang YIN, Zhe SUN, Geng SU. Electrochemical Capacitance of MnO_2 /PANI Composite[J]. Journal of Electrochemistry, 2010 , 16(1): 96-101.
DOI: 10.61558/2993-074X.2046
Available at: https://jelectrochem.xmu.edu.cn/journal/vol16/iss1/20