KOH Direct Activation for Preparing Activated Carbon Fiber from Polyacrylonitrile-based Pre-oxidized Fiber

doi:10.1007/s40242-014-4059-1

Chemical Research in Chinese Universities ›› 2014, Vol. 30 ›› Issue (3): 441-446.doi: 10.1007/s40242-014-4059-1

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KOH Direct Activation for Preparing Activated Carbon Fiber from Polyacrylonitrile-based Pre-oxidized Fiber

GAO Lili¹, LU Haiyan¹, LIN Haibo¹, SUN Xiuyun², XU Jianling³, LIU Dechen¹, LI Yang¹

1. College of Chemistry, Jilin University, Changchun 130012, P. R. China;
2. College of Chemistry and Pharmaceutical Engineering, Jilin Institute of Chemical Technology, Jilin 132022, P. R. China;
3. School of Environment, Northeast Normal University, Changchun 130117, P. R. China

Received:2014-02-25 Revised:2014-03-19 Online:2014-06-01 Published:2014-03-31
Contact: LIN Haibo, XU Jianling E-mail:lhb910@jlu.edu.cn;xujl@foxmail.com
Supported by:
Supported by the National Natural Science Foundation of China(No.21273097) and the Key Project of Jilin Province, China(No.20126010).

Abstract

Abstract:

The activated carbon fiber(ACF) was prepared from polyacrylonitrile-based pre-oxidized fiber(PANOF) by KOH direct activation. The influence of activation conditions including impregnation ratio(the mass ratio of PANOF to KOH), activation temperature and activation time on the pore structure and electrochemical properties of ACF was investigated, and the corresponding activation mechanism was proposed. The ACF prepared at an activation temperature of 800 ℃ and an impregnation ratio(the mass ratio of PANOF to KOH) of 1:2 for an activation time of 1 h in 6 mol/L KOH solution exhibits a specific surface area of 3029 m²/g, a mesoporosity of 84.2% and a specific capacitance of 288 F/g, and shows a good capacitive performance. The prepared ACF can be used as the electrode material for supercapacitors.

Key words: Direct activation, KOH, Activated carbon fiber, Supercapacitor, Polyacrylonitrile-based pre-oxidized fiber

GAO Lili, LU Haiyan, LIN Haibo, SUN Xiuyun, XU Jianling, LIU Dechen, LI Yang. KOH Direct Activation for Preparing Activated Carbon Fiber from Polyacrylonitrile-based Pre-oxidized Fiber[J]. Chemical Research in Chinese Universities, 2014, 30(3): 441-446.

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KOH Direct Activation for Preparing Activated Carbon Fiber from Polyacrylonitrile-based Pre-oxidized Fiber

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