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.
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Foundation item: Project(2005CB623703) supported by the National Basic Research Program of China; project(5JJ30103) supported by the Natural Science Foundation of Hunan Province
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Lai, Yq., Li, J., Li, J. et al. Preparation and electrochemical characterization of C/PANI composite electrode materials. J Cent. South Univ. Technol. 13, 353–359 (2006). https://doi.org/10.1007/s11771-006-0048-y
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DOI: https://doi.org/10.1007/s11771-006-0048-y