Activated carbon coated with polyaniline as an electrode material in supercapacitors

作者：Wang Qin; Li Jian-ling^*; Gao Fei; Li Wen-sheng; Wu Ke-zhong; Wang Xin-dong

来源：New Carbon Materials, 2008, 23(3): 275-280.

DOI：10.1016/S1872-5805(08)60030-X

• supercapacitor
• polyaniline
• activated carbon
• cyclic voltammetry
• specific capacitance

The performance of activated carbons coated with polyaniline (PANI-C) by polymerization of aniline Using cyclic voltammetry was investigated as an electrode for supercapacitors by scanning electron microscopy, electrochemical impedance spectroscopy, and constant current charge/discharge measurement. Results showed that a PANT thin film was uniformly deposited on the surface of the activated carbon, forming an interlinked porous network. The PANI-C composite electrodes had better cycling stability than PANT electrodes and the specific capacitance of the composite electrodes was 587 F/g, which was much higher than that of the pristine activated carbon (140 F/g), owing to the faradic reaction of PANT with the electrolyte. The PANT electrode was less stable than the PANI-C composite electrode with a capacitance decay from 513 to 334 F/g for the former and 415 to 385 for the latter, after 50 cycles.

• 出版日期2008-9
• 单位北京科技大学