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. 28, 2014
Filed:
Jun. 24, 2005
Tooru Fuse, Inashiki-gun, JP;
Hiroyuki Uono, Inashiki-gun, JP;
Keita Yamaguchi, Inashiki-gun, JP;
Tomiyuki Kamada, Inashiki-gun, JP;
Tooru Fuse, Inashiki-gun, JP;
Hiroyuki Uono, Inashiki-gun, JP;
Keita Yamaguchi, Inashiki-gun, JP;
Tomiyuki Kamada, Inashiki-gun, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
A negative-electrode material is provided that can be produced at a low cost and yields a lithium secondary battery with an excellent balance of various battery characteristics even when used in high electrode densities. It has a graphite powder with a tap density of 0.80 g/cmor higher and 1.35 g/cmor lower, an amount of surface functional groups, O/C value, of 0 or larger and 0.01 or smaller, a BET specific surface area of 2.5 m/g or larger and 70 m/g or smaller, a Raman R value of 0.02 or larger and 0.05 or smaller.