文献类型：期刊文献

英文题名：Effect of conductive filler on the impedance behaviors of activated carbon based electric double layer capacitors

作者：Liu, Ximiao[1];Juan, Li[1];Zhan, Liang[1];Tang, Li[1];Wang, Yanli[1];Qiao, Wenming[1];Liang, Xiaoyi[1];Ling, Licheng[1]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China

年份：2010

卷号：642

期号：1

起止页码：75

外文期刊名：JOURNAL OF ELECTROANALYTICAL CHEMISTRY

收录：;EI(收录号：20101212780099);WOS:【SCI-EXPANDED(收录号:WOS:000276822800012)】；

基金：This work was supported by the National Science Foundation of China (Nos. 50730003, 50672025, 20806024) and the Research Fund of China for the Doctoral Program of Higher Education (No. 20070251008).

语种：英文

外文关键词：Electric double layer capacitors; Electrode; Diffusion; Simulation; Microstructure; Activated carbon

摘要：Carbon aerogel, carbon black and graphite were used to analyze the influence of conductive filler on the impedance behaviors of activated carbon based electric double layer capacitors (EDLCs). According to the electrochemical impedance spectrum (EIS) data, a new equivalent circuit model was proposed involving the kinetic characteristics of ion diffusion, furthermore, Marquardt fit procedure was applied to the EIS data to obtain the model parameter values. The results indicated that carbon aerogel could significantly decrease the resistance of EDLCs by increasing the diffusion coefficient of ions within electrodes and decreasing the interface resistance because of its suitable particle size, mesoporous structures and finely-branched particle performance. Crown Copyright (C) 2010 Published by Elsevier B.V. All rights reserved.