The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 22, 2006
Filed:
Aug. 27, 2004
Minoru Noguchi, Wako, JP;
Manabu Iwaida, Wako, JP;
Naohiko Oki, Wako, JP;
Eisuke Komazawa, Wako, JP;
Takahiro Takeshita, Wako, JP;
Kenichi Murakami, Wako, JP;
Minoru Noguchi, Wako, JP;
Manabu Iwaida, Wako, JP;
Naohiko Oki, Wako, JP;
Eisuke Komazawa, Wako, JP;
Takahiro Takeshita, Wako, JP;
Kenichi Murakami, Wako, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
In an electric double-layer capacitor, a solution of a quaternary ammonium borofluoride compound in propylene carbonate is used as an electrolyte. The electrode includes alkali-activated carbon made using meso-phase pitch as a starting material, and a conductive filler having a rest potential smaller than that of the alkali-activated carbon in the electrolyte. The amount Fc of conductive filler incorporated in the electrode is set in a range of 10% by weight≦Fc≦40% by weight. Such electric double-layer capacitor has a large electrostatic capacity and excellent durability.