Preparation of activated carbons from mesophase pitch and their electrochemical properties

被引：7
|
作者：
Lai Yan-qing [1 ]
Li Jing [1 ]
Song Hai-shen [1 ]
Zhang Zhi-an [1 ]
Li Jie [1 ]
Liu Ye-xiang [1 ]
机构：
[1] Cent S Univ, Sch Met Sci & Engn, Changsha 410083, Peoples R China
来源：
JOURNAL OF CENTRAL SOUTH UNIVERSITY OF TECHNOLOGY | 2007年 / 14卷 / 05期
关键词：
supercapacitor; activated carbon; mesophase pitch; chemical activation; pore structure; electrochemical properties;
D O I：
10.1007/s11771-007-0121-1
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The influences of molar ratio of KOH to C and activated temperature on the pore structure and electrochemical property of porous activated carbon from mesophase pitch activated by KOH were investigated. The surface areas and the pore structures of activated carbons were analyzed by nitrogen adsorption, and the electrochemical properties of the activated carbons were studied 190 m(2)/g using two-electrode capacitors in organic electrolyte. The results indicate that the maximum surface area of 3 is obtained at molar ratio of KOH to C of 5: 1, the maximum specific capacitance of 122 F/g is attained at molar ratio of KOH to C of 4: 1, and 800 degrees C is the proper temperature to obtain the maximum surface area and capacitance.
引用
收藏
页码：633 / 637
页数：5
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