AC impedance analysis of supercapacitors utilizing carbon nanotube electrodes

被引：13

作者：

Liang, K ^{[1
]}

Chen, A

Feng, ZS

Ye, ZX

机构：

[1] Sichuan Univ Sci & Technol, Dept Mat Sci & Engn, Chengdu 610039, Peoples R China

[2] Univ Elect Sci & Technol China, Inst Informat Mat Engn, Chengdu 610054, Peoples R China

[3] Chengdu Inst Informat Engn, Dept Earth Environm Sci, Chengdu 610041, Peoples R China

来源：

ACTA PHYSICO-CHIMICA SINICA | 2002年 / 18卷 / 04期

关键词：

AC impedance; carbon nanotube; activated carbon; frequency-response characteristic; supercapacitor;

D O I：

10.3866/PKU.WHXB20020420

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：

AC impedance analysis is employed to study frequency-response characteristics of supercapacitors utilizing carbon nanotube and activated carbon block electrodes. Charge saturation for carbon nanotube occurs at about 250 mHz, but that of activated carbon is not observed in the frequency range of 100 mHz to 100 kHz. There is a 45degrees line in the complex-plane plot of each supercapacitor utilizing both carbon nanotube or activated carbon electrodes. Phase angles of supercapacitors with both kinds of electrodes are far smaller than 90degrees of pure capacitors.

引用

页码：381 / 384

页数：4

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