Capacitive performance of polyaniline prepared by soft template method

Guda Wei, Xiehi Chun, WuJian Sheng, Shenlin Jiang
2012 Procedia Engineering  
Camphor sulfonic acid (CSA) and p-toluene sulphonic acid (p-TSA) as the soft template, polyaniline (PANI) was prepared by chemical oxidative polymerization respectively. The characteristics of the different samples were characterized by SEM, FT-IR, UV-vis and conductivity measurement. Two samples were pressed into pellets as active electrode. Electrochemical properties of different electrodes were investigated by cyclic voltammetry and electrochemical impedance spectroscopy. Supercapacitors
more » ... mbled with symmetric electrode were investigated by galvanostatic charge-discharge. The experimental results indicated that the samples prepared in different soft templates showed entirely different morphology. The PANI sample prepared with CSA as soft template exhibited nano-fiber form, electrode material presents characteristics of double-layer capacitance with good electrochemical reversibility. Otherwise, The PANI sample prepared with p-TSA as soft template exhibited microtubule form, the electrochemical performance involved not only double-layer capacitance but also faradic pseudocapacitance.
doi:10.1016/j.proeng.2011.12.597 fatcat:vwmk6ztlpray5mon3fvyqhsn6q