Preparation and electrochemical characterization of C/PANI composite electrode materials

作者：Lai Yan-qing; Li Jing; Li Jie; Lu Hai; Zhang Zhi-an; Liu Ye-xiang

来源：Journal of Central South University of Technology, 2006, 13(4): 353-359.

DOI：10.1007/s11771-006-0048-y

• supercapacitor
• polyaniline
• composite electrode materials
• electrochemical properties

Taking the nano-sized carbon black and aniline monomer as precursor and (NH4)(2)S2O6 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.

• 出版日期2006-8
• 单位中南大学