Effect of VGCF Addition into the Carbon Electrode for Electric Double Layer Capacitor (EDLC)

Autor:	Yong Jung Kim, Toshiyuki Kasai, Kiyohiro Ishii, Morinobu Endo, Risa Takahata, K. Koshiba, Takeda Toshikazu
Rok vydání:	2001
Předmět:	Materials science Equivalent series resistance visual_art Electrode Carbon fibers visual_art.visual_art_medium Nanotechnology Carbon black Internal resistance Composite material Electric double-layer capacitor Electrical conductor Entire cell
Zdroj:	TANSO. 2001:14-18
ISSN:	1884-5495 0371-5345
DOI:	10.7209/tanso.2001.14
Popis:	The most interesting factor in commercial EDLC has been considered as theresistance of the entire cell unit, especially for use at higher out-putcurren density. In order to reduce the resistance of the EDLC cell, the sheet type electrode has been prepared by adding the vapor-grown carbon fibers (VGCFs) a a conductive additive. The cell performances were evaluated by comparing with tha included the carbon black (CB). Equivalent series resistance, ESR, of electrod and internal resistance for VGCFs-added sheet samples were greatly reduced, in th range of 20 % and 50 % less, as compared with those of carbon black. The tests fo the cycle life and life time properties showed that it is also effective for theimprovement of cyclic performances, life time as compared with that of CB base samples. The present results will be effective to design the electrode ofpractica EDLC cell for especially high power use.
Databáze:	OpenAIRE
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