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Preparation and electrochemical characterization of C/PANI composite electrode materials
- Source :
- Journal of Central South University of Technology. 13:353-359
- Publication Year :
- 2006
- Publisher :
- Springer Science and Business Media LLC, 2006.
-
Abstract
- Taking the nano-sized carbon black and aniline monomer as precursor and (NH4)2S2O6 as oxidant, the well coated C/polyaniline(C/PANI) composite materials were prepared by in situ polymerization of the aniline on the surface of well-dispersed nano-sized carbon black for supercapacitor. The micro-structure of the C/PANI composite electrode materials were analyzed by SEM. The electrochemical properties of C/ PANI and PANI composite electrode were characterized by means of the galvanostatic charge-discharge experiment, cyclic voltammetric measurement and impedance spectroscopy analysis. The results show that by adding the nano-sized carbon black in the process of chemical polymerization of the aniline, the polyaniline can be in situ polymerized and well-coated onto the carbon black particles, which may effectively improve the aggregation of particles and the electrolyte penetration. What’s more, the maximum of specific capacitance of C/PANI electrode 437.6 F · g−1 can be attained. Compared with PANI electrode, C/PANI electrode shows more desired capacitance characteristics, smaller internal resistance and better cycle performance.
Details
- ISSN :
- 19930666 and 10059784
- Volume :
- 13
- Database :
- OpenAIRE
- Journal :
- Journal of Central South University of Technology
- Accession number :
- edsair.doi...........f1013cafcc03c08ff2ca7f4c45f11137