椰壳基超级电容活性炭的制备及其电化学性能研究

Abstract

Abstract: Activated carbon for supercapacitor was prepared from coconut shell carbide by KOH activation. The effects of the ratio of KOH/carbon, activation temperature and activation time on the pore structures and specific capacitance of activated carbon were investigated. The results showed that the high quality activated carbon as electrode material could be prepared under the conditions of the mass ratio of KOH/carbon 4:1, activation temperature 800℃ and activation time 60 min. Under these conditions, its specific surface area of the sample was 2 891 m²/g, total pore volume was 1.488 cm³/g, the mesopore ratio was 73.6 % and specific capacitance was 235 F/g.

Key words: coconut shell carbide, activated carbon, electrode material, supercapacitor, specific capacitance

CLC Number:

TQ35
TQ424.1

HOU Min, SUN Kang, DENG Xian-lun, XIAO Feng-long, YANG Hua, LIN Guan-feng. Preparation and Electrochemical Performance of Coconut Shell-based Activated Carbon for Supercapacitor[J]. bce, 2016, 50(2): 13-18.

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Preparation and Electrochemical Performance of Coconut Shell-based Activated Carbon for Supercapacitor

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