Electrochemical capacitor with chemically polymerized conducting polymer based on activated carbon as hybrid electrodes

被引:35
作者
Ryu, KS
Lee, YG
Kim, KM
Park, YJ
Hong, YS
Wu, XL
Kang, MG
Park, NG
Song, RY
Ko, JM
机构
[1] Elect & Telecommun Res Inst, Ion Device Team, Taejon 305350, South Korea
[2] Hanbat Natl Univ, Dept Appl Chem, Taejon 305719, South Korea
关键词
dual-layer; polymer electrolyte; compatible layer; inorganic single ion conductor; ionic conductivity; high rate capability;
D O I
10.1016/j.synthmet.2005.07.167
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
ACP/PAn hybrid electrodes for surpercapacitors were fabricated by adsorption of aniline monomers on the surface of activated carbon powders (ACP) and their polymerization by using a chemical method. Their capacitance performances were investigated in the 1 M H2SO4 aqueous electrolyte solution by means of cyclic voltammetry and impedance spectroscopy. The cyclic voltammetric results showed that the ACP/PAn electrodes gave an increased specific capacitance value of 273 F/, which was larger than the capacitance of the ACP, approximately 193 F/g. However, impedance spectroscopic data showed better response time and higher frequency capacitance performance in ACP than ACP/PAn electrodes. This result means that the redox reaction of PAn is rate-determined step and can not contribute for charge storage at high frequency range over 1 Hz.
引用
收藏
页码:89 / 92
页数:4
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