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:
Jan. 24, 2006
Filed:
Oct. 12, 1999
Kunio Nishimura, Kawasaki, JP;
Akinori Sudoh, Kawasaki, JP;
Chiaki Sotowa, Kawasaki, JP;
Showa Denko K.K., Tokyo, JP;
Abstract
The present invention relates to graphite powder and to a battery using it as a negative electrode material, the powder having a specific surface area of not more than 3 m/g, an aspect ratio of not more than 6, and a tapping bulk density of not less than 0.8 g/cm; or a tapping bulk density of not less than 0.8 g/cmand an oxidation initiation temperature of not less than 600° C.; or a specific surface area of not more than 3 m/g and a tapping bulk density of not less than 0.8 g/cm, a specific electrical resistance of the powder not more than 0.06 Ωcm in the specified condition. The battery obtained thus has a large discharge capacity, good cycle property and high charge and discharge efficiency.