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:
May. 18, 2010
Filed:
Mar. 29, 2005
Kazuhiko Shimizu, Fukushima-Ken, JP;
Mariko Maeda, Fukushima-Ken, JP;
Syuji Morinishi, Fukushima-Ken, JP;
Aisaku Nagai, Tokyo, JP;
Akiko Hoshi, Fukushima-Ken, JP;
Kazuhiko Shimizu, Fukushima-Ken, JP;
Mariko Maeda, Fukushima-Ken, JP;
Syuji Morinishi, Fukushima-Ken, JP;
Aisaku Nagai, Tokyo, JP;
Akiko Hoshi, Fukushima-Ken, JP;
Kureha Corporation, Tokyo, JP;
Abstract
A negative electrode material for a high input/output currant-type non-aqueous electrolyte secondary battery, comprising a carbon material having an average (002) interlayer spacing dof 0.355-0.400 nm determined by X-ray diffractometry and a true density of 1.50-1.60 g/cm, and exhibiting a capacity (A) of at least 50 mAh/g in a battery voltage range of 0.3-1.0 V and a ratio ((A)/(B)) of at least 0.3 between the capacity (A) and a capacity (B) in a battery voltage range of 0-1.0 V when measured as discharge capacities with a counter electrode of lithium. The negative electrode material is non-graphitizable and has properties suitable for a negative electrode material for high input/output current non-aqueous electrolyte secondary batteries as used in HEV, etc.