Transactions of Nonferrous Metals Society of China The Chinese Journal of Nonferrous Metals

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中国有色金属学报

ZHONGGUO YOUSEJINSHU XUEBAO

第15卷    第9期    总第78期    2005年9月

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文章编号: 1004-0609(2005)09-1421-05
模板法制备超级电容器中孔炭电极材料
赵家昌1, 2, 赖春艳1, 2, 戴 扬1, 2, 解晶莹1

(1. 中国科学院 上海微系统与信息技术研究所
能源科学与技术研究室, 上海 200050;
2. 中国科学院 研究生院, 北京 100049
)

摘 要:  以硅溶胶为模板剂、 以葡萄糖为炭源, 采用模板法制备了超级电容器中孔炭电极材料(SMC)。 采用液氮吸附等温线对其孔结构进行了表征, 考察了其在有机非水Et4NBF4/PC电解液中的电容特性和倍率性能, 采用交流阻抗法测试了其频率响应特性, 并与商品化微孔活性炭进行了比较。 结果表明: 模板法制得的中孔炭的最可几孔径分布集中在6.3和19.0 nm, 呈双峰分布, 与商品化微孔活性炭相比, 由于SMC孔径更大而具有更优异的频率响应特性和倍率性能。

 

关键字:  超级电容器; 中孔炭; 模板法; 孔径分布; 倍率特性

Mesoporous carbon as supercapacitor material prepared by template method
ZHAO Jia-chang1, 2, LAI Chun-yan1, 2, DAI Yang1, 2, XIE Jing-ying1

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: Mesoporous carbon (SMC) used as electrode material for supercapacitor was prepared by template method using silica sol as template and glucose as carbon source. The pore structure of SMC was characterized by N2 adsorption/desorption isotherms. The capacitive characteristics and rate capability of the mesoprous carbon was investigated in non-aqueous Et4NBF4/PC electrolyte. The frequency behavior was characterized by electrochemical impedance spectroscopy. And the properties of the mesoporous carbon were compared with that of commercially available microporous activated carbon. The results show that the predominant pore size of SMC centers at 6.3 and 19.0 nm and SMC delivers better frequency behavior and rate capability due to larger pore size compared with that of commercially available microporous activated carbon.

 

Key words: supercapacitor; mesoporous carbon; template method; pore size distribution; rate capability

ISSN 1004-0609
CN 43-1238/TG
CODEN: ZYJXFK

ISSN 1003-6326
CN 43-1239/TG
CODEN: TNMCEW

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