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Journal of Nanomaterials
Volume 2012, Article ID 929343, 8 pages
http://dx.doi.org/10.1155/2012/929343
Research Article

Electric Double-Layer Capacitor Fabricated with Addition of Carbon Nanotube to Polarizable Electrode

Department of Electrical and Electronic Engineering, Tokai University, 4-1-1 Kitakaname, Hiratsuka, Kanagawa, 259-1292, Japan

Received 13 October 2011; Accepted 18 March 2012

Academic Editor: Sulin Zhang

Copyright © 2012 Yoshiyuki Show. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Electrical double-layer capacitor (EDLC) was fabricated with addition of carbon nanotube (CNT) to polarization electrodes as a conducting material. The CNT addition reduced the series resistance of the EDLC by one-twentieth, while the capacitance was not increased by the CNT addition. The low series resistance leaded to the high electrical energy stored in the EDLC. In this paper, the dependence of the series resistance, the specific capacitance, the energy, and the energy efficiencies on the CNT addition is discussed.