文献类型：期刊文献

英文题名：The superior electrochemical performance of oxygen-rich activated carbons prepared from bituminous coal

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

年份：2008

卷号：10

期号：11

起止页码：1809

外文期刊名：ELECTROCHEMISTRY COMMUNICATIONS

收录：;EI(收录号：20084311660593);WOS:【SCI-EXPANDED(收录号:WOS:000260992900039)】；

基金：The authors gratefully acknowledge the financial support of the National Natural Science Foundation of China (50672025, 50730003).

语种：英文

外文关键词：Activated carbon; Electrochemical double layer capacitors; Oxygen-rich; High power output; High energy density

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.