自然科学版 英文版
自然科学版 英文版
自然科学版 英文版

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中南大学学报(英文版)

Journal of Central South University

Vol. 12    No. 6    December 2005

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Synthesis of mesoporous carbon as electrode material for
supercapacitor by modified template method
ZHAO Jia-chang(赵家昌)1,2, LAI Chun-yan(赖春艳)1,2, DAI Yang(戴 扬)1,2,
XIE Jing-ying(解晶莹)1

1. Energy Science and Technology Laboratory, Shanghai Institute of Microsystem and
Information Technology, Chinese Academy of Sciences, Shanghai 200050, China;
2. Graduate School of the Chinese Academy of Sciences, Beijing 100049, China

Abstract:The pore structures and electrochemical performances of mesoporous carbons prepared by silica sol template method as electrode material for supercapacitor were investigated. The mean pore size and mass specific capacitance of the mesoporous carbons increase with the increase of mass ratio of silica sol to carbon source (glucose). A modified template method, combining silica sol template method and ZnCl2chemical activation method, was proposed to improve the mass specific capacitance of the mesoporous carbon with an improved BET surface area. The correlation of rate capability and pore structure was studied by constant current discharge and electrochemical impedance spectroscopy. A commercially available microporous carbon was used for comparison. The result shows that mesoporous carbon with a larger pore size displays a higher rate capability. Mesoporous carbon synthesized by modified template method has both high mass specific capacitance and good rate capability.

 

Key words: supercapacitor; mesoporous carbon; modified template method; electrochemical performance;synthesis

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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