Preparation and electrochemical characterization of C/PANI composite electrode materials^①

来源期刊：中南大学学报(英文版)2006年第4期

论文作者：赖延清 李晶 李劼 卢海 张治安 刘业翔

文章页码：353 - 359

Key words：supercapacitor; polyaniline; composite electrode materials; electrochemical properties

Abstract: Taking the nano-sized carbon black and aniline monomer as precursor and (NH₄)₂S₂O₆as 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^-1can be attained. Compared with PANI electrode, C/PANI electrode shows more desired capacitance characteristics, smaller internal resistance and better cycle performance.

基金信息：the National Basic Research Program of China