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. 06, 2005
Filed:
Dec. 01, 2000
Yusaku Sakata, Okayama, JP;
Akinori Muto, Okayama, JP;
Norimasa Yamada, Kurashiki, JP;
Azhar Uddin, Okayama, JP;
Masaru Takei, Hofu, JP;
Kenji Kojima, Hofu, JP;
Satoshi Ibaraki, Hofu, JP;
Chisato Marumo, Hofu, JP;
Yusaku Sakata, Okayama, JP;
Akinori Muto, Okayama, JP;
Norimasa Yamada, Kurashiki, JP;
Azhar Uddin, Okayama, JP;
Masaru Takei, Hofu, JP;
Kenji Kojima, Hofu, JP;
Satoshi Ibaraki, Hofu, JP;
Chisato Marumo, Hofu, JP;
Kanebo Ltd., Tokyo, JP;
Abstract
It is acknowledged that an electric double layer capacitor is markedly superior in power density and cycle characteristics to a secondary battery. However, a higher energy density is required to apply it to a power supply of hybrid vehicle, electric vehicle or the like. The present inventors have found that a carbonaceous material containing copper or a compound of copper exhibits excellent characteristics as an electrode material for capacitor and can realize a capacitor having a large capacity. In the electrode material and the capacitor, copper or a compound of copper exists in the amount of 0.8 to 30 parts by weight calculated on the metal basis based on 100 parts by weight of the carbonaceous material, particularly preferably.