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:
Apr. 15, 2014
Filed:
Oct. 30, 2009
Hiroyuki Uono, Ibaraki, JP;
Hideharu Sato, Ibaraki, JP;
Hitoshi Matsumoto, Ibaraki, JP;
Atsuyoshi Inoue, Kanagawa, JP;
Hiroyuki Uono, Ibaraki, JP;
Hideharu Sato, Ibaraki, JP;
Hitoshi Matsumoto, Ibaraki, JP;
Atsuyoshi Inoue, Kanagawa, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
To provide a carbon material capable of suppressing excessive reactivity with an electrolytic solution and excellent in a rapid charge/discharge characteristics. A carbon material for lithium ion secondary batteries, which satisfies: (i) a tap density≧0.75 g/cm; (ii) a Raman R value≧0.23 and a half width of D band Δν<45 cm, in which the D band appears in the vicinity of 1,358 cmof the Raman spectrum; and (iii) 4 m/g≦BET specific surface area (SA)≦11 m/g.