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

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 elec...

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Bibliographic Details
Published in:Chemical research in Chinese universities 2014-06, Vol.30 (3), p.441-446
Main Authors: Gao, Lili, Lu, Haiyan, Lin, Haibo, Sun, Xiuyun, Xu, Jianling, Liu, Dechen, Li, Yang
Format: Article
Language:English
Subjects:
Analytical Chemistry
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Inorganic Chemistry
KOH溶液
Organic Chemistry
PANOF
Physical Chemistry
活化时间
活性炭纤维
活性碳纤维
纤维制备
聚丙烯腈基
预氧化纤维
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Summary: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 b in 6 mol/L KOH solution exhibits a specific surface area of 3029 m^2/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.
ISSN:1005-9040
2210-3171
DOI:10.1007/s40242-014-4059-1