NDLI: Evaluation of Space Charge and Capacitance of Electric Double Layer Capacitor using Ionic Liquid

Content Provider	IEEE Xplore Digital Library
Author	Tashima, D. Taniguchi, M. Yoshitama, H. Otsubo, M.
Copyright Year	2008
Description	Author affiliation: Univ. of Miyazaki, Miyazaki (Tashima, D.; Taniguchi, M.; Yoshitama, H.; Otsubo, M.)
Abstract	In this study, space charge distribution in Electric Double Layer Capacitor (EDLC) for energy storage has been examined by Pulsed Electro-Acoustic (PEA) Method. Also, ketjen black was used for polarized electrodes instead of conventionally used acetylene black in order to improve the capacitance of EDLC. Usually, ketjen black exhibits higher electronic conductivity compared to acetylene black, so that ketjen black could be considered as conducting filler. Moreover, $N_{2}$ adsorption-desorption isotherm as well as TEM observation revealed that ketjen black used in this study has different type of pore structures compared to acetylene black. Therefore, the space charge and capacitance of prepared EDLC using ionic liquid was evaluated. As the results, it was found that the ketjen black containing EDLC showed fairly high charge density and high capacitance compared to acetylene black containing one. In addition, temperature characteristic of EDLC containing ketjen black and acetylene black with best quantity were measured on temperature from 0degC to 50degC. It is understood that ketjen black as conducting material and ionic liquid based EDLC was superior to organic electrolyte based EDLC in all temperature on capacitance. Also, internal resistance of EDLC containing ketjen black and ionic liquid based EDLC can be decrease.
Starting Page	149
Ending Page	152
File Size	2685714
Page Count	4
File Format	PDF
ISBN	9781424425488
DOI	10.1109/CEIDP.2008.4772882
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-26
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Space charge Capacitance Supercapacitors Temperature measurement Energy storage Pulsed electroacoustic methods Polarization Electrodes Conductivity Electrical resistance measurement
Content Type	Text
Resource Type	Article

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