Open AccessInfluence of Textural Structure by Heat-treatment on Electrochemical Properties of Pitch-based Activated Carbon Fiber
Author(s) -
Kyung Hoon Kim,
Mi-Seon Park,
Min-Jung Jung,
YoungSeak Lee
Publication year - 2015
Publication title -
applied chemistry for engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.144
H-Index - 11
eISSN - 2288-4505
pISSN - 1225-0112
DOI - 10.14478/ace.2015.1085
Subject(s) - activated carbon , microporous material , materials science , electrochemistry , capacitance , cyclic voltammetry , fiber , specific surface area , porosity , mesoporous material , horizontal scan rate , analytical chemistry (journal) , composite material , electrode , chemistry , adsorption , chromatography , organic chemistry , catalysis
In this study, electrochemical properties of pitch-based activated carbon fibers (ACFs) were investigated by different heat-treatment temperature of the pitch-based ACFs in order to improve the specific capacitance of electric double-layer capacitor (EDLC). The ACFs were prepared by different heat-treatment temperatures of 1050 and , after activation with 4 M KOH at using stabilized pitch fiber. The specific surface area of prepared ACFs increased from to , also the micropore and mesopore volumes of prepared ACFs were increased. These results because pore was produced by desorbing oxygen and hydrogen elements within the ACFs, and pore size was increased by contraction ACFs by heat-treatment process. Because of the porous properties, the specific capacitance was increased from 73 F/g to 119 F/g using cyclic voltammetry with 1 M at scan rates of 5 mV/s.
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