| Synthesis of mesoporous carbon as electrode material for supercapacitor by modified template method |
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| 作者姓名： | 赵家昌 赖春艳 戴扬 解晶莹 |
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| 作者单位： | [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 |
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| 摘 要： | 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 ZnCl2 chemical 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.
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| 关 键 词： | 超级电容器 电化学性能 中孔碳 合成 电极材料 改进模板法 |
| 文章编号： | 1005-9784（2005）06-0647-06 |
| 收稿时间： | 2005-07-28 |
| 修稿时间： | 2005-10-10 |
Synthesis of mesoporous carbon as electrode material for supercapacitor by modified template method |
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| Zhao Jia-chang , Lai Chun-yan , Dai Yang and Xie Jing-ying.Synthesis of mesoporous carbon as electrode material for supercapacitor by modified template method[J].Journal of Central South University of Technology,2005,12(6):647-652. |
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| Authors: | Zhao Jia-chang Lai Chun-yan Dai Yang and Xie Jing-ying |
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| Affiliation: | (1) Energy Science and Technology Laboratory, Shanghai Institute of Microsystem, Information Technology, Chinese Academy of Sciences, 200050 Shanghai, China;(2) Graduate School of the Chinese Academy of Sciences, 100049 Beijing, China |
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| 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 ZnCl2 chemical 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. |
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| Keywords: | supercapacitor mesoporous carbon modified template method electrochemical performance synthesis |
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