Polyacene capacitors |
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Authors: | Shizukuni Yata Eiji Okamoto Hisashi Satake Hidekazu Kubota Masanori Fujii Tomohiro Taguchi Hajime Kinoshita |
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Affiliation: | Development Laboratories, Kanebo Ltd., Miyakojima-ku, Osaka 534, Japan |
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Abstract: | We fabricated two types of polyacene capacitor with extremely stable polyacenic semiconductor (PAS) as the positive and negative electrodes. The first one is a coin-type PAS capacitor (six different sizes), which possesses large capacity with high reliability. Its capacity is much larger than that of the conventional electric double-layer capacitor which uses activated carbon as electrode. PAS capacitor can maintain more than 70% of the initial capacity even after 100 000 cycles. Moreover, this capacitor can be charged and discharged in a few minutes as well as at low rate. The second one is a cylinder-type PAS capacitor (diameter: 18 mm, height: 65 mm) which shows high capacity of 100 F and can discharge at the extremely high rate of 80 C. The coin-type PAS capacitor is currently used for memory back-up of electrical and communication equipment, and the cylinder-type is considered to be useful as power back-up for starting drive parts of electric equipment which needs high power density. |
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Keywords: | Polyacene Semiconductors Conductive polymers |
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