The superior electrochemical performance of oxygen-rich activated carbons prepared from bituminous coal

被引：128

作者：

Zhang, Chuanxiang ^{[1
,2
]}

Long, Donghui ^{[1
]}

Xing, Baolin ^{[2
]}

Qiao, Wenming ^{[1
]}

Zhang, Rui ^{[1
]}

Zhan, Liang ^{[1
]}

Liang, Xiaoyi ^{[1
]}

Ling, Licheng ^{[1
]}

机构：

[1] E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

[2] Henan Polytech Univ, Jiaozuo 454000, Henan, Peoples R China

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2008年 / 10卷 / 11期

基金：

中国国家自然科学基金;

关键词：

Activated carbon; Electrochemical double layer capacitors; Oxygen-rich; High power output; High energy density;

D O I：

10.1016/j.elecom.2008.09.019

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Oxygen-rich activated carbons (OAC) were prepared from bituminous coal through a quick KOH activation. OAC exhibited a moderately large surface area of 1950 m(2)/g, a relative wide pore size distribution, good conductivity and very high oxygen content (up to 12 wt.%). Compared with high surface area activated carbons prepared by the conventional KOH activation, OAC have superior capacitive behavior, power output and high energy density in electrochemical double layer capacitors (EDLC). OAC presented a high specific capacitance of 370 F/g in 3 M KOH electrolyte at a low current density of 50 mA/g and still remained 270 F/g even at a high current density of 20 A/g. (c) 2008 Published by Elsevier B.V.

引用

页码：1809 / 1811

页数：3

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