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:
Sep. 01, 2009
Filed:
Dec. 21, 2005
Raw material carbon composition for carbon material for electrode in electric double layer capacitor
Tamotsu Tano, Kuga-gun, JP;
Shiro Nakamo, Kuga-gun, JP;
Takashi Oyama, Kuga-gun, JP;
Hideki Ono, Yokohama, JP;
Keizou Ikai, Yokohama, JP;
Kiwamu Takeshita, Tokyo, JP;
Tamotsu Tano, Kuga-gun, JP;
Shiro Nakamo, Kuga-gun, JP;
Takashi Oyama, Kuga-gun, JP;
Hideki Ono, Yokohama, JP;
Keizou Ikai, Yokohama, JP;
Kiwamu Takeshita, Tokyo, JP;
Nippon Oil Corporation, Tokyo, JP;
Abstract
The present invention provides a raw material carbon composition that is converted to a carbon material for an electrode in an electric double layer capacitor that can develop a high level of electrostatic capacity with good reproducibility without producing any synthetic pitch. The raw material carbon composition is converted to a carbon material for an electrode in an electric double layer capacitor upon activation treatment and is characterized in that, when the raw material carbon composition is carbonized in an inert gas atmosphere at a temperature of 1000 to 1500° C., the true relative density (RD) and the total hydrogen content (TH %) in the carbonized material obtained after the burning satisfy the following formula (1):RD=−0.75TH %+intercept  (1)wherein the intercept is 2.160 or greater.