Abstract
Polyaniline/multi-walled carbon nanotubes (PANI/MWCNT) composites synthesized by chemical oxidation method were characterized by scanning electron microscopy (SEM),X-ray diffraction (XRD) and IR techniques. In 1mol/L Li2SO4 neutral solution,the electrochemical performance of the composites electrode was investigated by cyclic voltammetry,galvanostatic charge-discharge tests and ac impedance spectroscopy. The results showed that the composites electrode performed well in 1mol/L Li2SO4 solution,the specific capacitance reached 412F/g at 5 mA/cm2. The composites electrode possessed better capability of high current than that of PANI electrode,the specific capacitance kept at 318 F/g at 50mA/cm2 and was 77.2% of that at 5 mA/cm2,but the specific capacitance of PANI at 50 mA/cm2 was only 56.2% of that at 5 mA/cm2. The addition of multi-walled carbon nanotubes could decrease the resistance of composites electrode,leading to remarkably improve the capability of high current discharge.
Keywords
electrochemical capacitor, polyaniline/multi-walled carbon nanotubes composites, capacitance performance
Publication Date
2009-08-28
Online Available Date
2009-08-28
Revised Date
2009-08-28
Received Date
2009-08-28
Recommended Citation
Wen-bo CONG, Xiao-shu HE.
Capacitor Property of PANI/MWCNT Electrode in Li_2SO_4 Solution[J]. Journal of Electrochemistry,
2009
,
15(3): 288-292.
DOI: 10.61558/2993-074X.1997
Available at:
https://jelectrochem.xmu.edu.cn/journal/vol15/iss3/11
Included in
Engineering Science and Materials Commons, Materials Chemistry Commons, Materials Science and Engineering Commons, Physical Chemistry Commons
