Electropolymerization of high stable poly(3,4-ethylenedioxythiophene) in ionic liquids and its potential applications in electrochemical capacitor

被引:140
作者
Liu, Keke [1 ]
Hu, Zhenglong [1 ]
Xue, Rong [1 ]
Zhang, Jianrong [1 ]
Zhu, Junjie [1 ]
机构
[1] Nanjing Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Analyt Chem Life Sci, Nanjing 210093, Peoples R China
基金
中国国家自然科学基金;
关键词
supercapacitor; ionic liquids; capacitance; electropolymerization; conducting polymers; poly(3,4-ethylenedioxythiophene);
D O I
10.1016/j.jpowsour.2008.01.024
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Poly(3,4-ethylenedioxythiophene) (PEDOT) has been successfully electropolymerized using a purified 1-butyl-3-methylimidazolium tetrafluoroborate ([bmim][BF4]) as both the growth medium and the supporting electrolyte. The electrochemical performance of the PEDOT thin film was investigated in I mol L-1 H2SO4 solution. It possesses nearly ideal capacitive property, and its specific capacitance is about 130Fg(-1). Compared with other conducting polymers, enhanced cycling lifetime (up to 70,000 cycles), which is close to that of active carbon materials, was observed on repetitive redox cycling. (c) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码:858 / 862
页数:5
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