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:
Feb. 03, 2009
Filed:
Dec. 24, 2003
Sang-jin Kim, Suwon, KR;
Kyou-yoon Sheem, Ohsan, KR;
Joon-sup Kim, Suwon, KR;
Samsung SDI Co., Ltd., Suwon-si, KR;
Abstract
A negative active material of a rechargeable lithium battery includes a crystalline carbon core having an intensity ratio Ra I(1360)/I(1580) of a Raman Spectroscopy peak intensity I(1360) at a (1360) plane to an Raman Spectroscopy peak intensity I(1580) at a (1580) plane of 0.01 to 0.45 and a shell with a turbostratic or half-onion ring structure coated on the core, the shell including crystalline micro-particles and a semi-crystalline carbon, the shell having an intensity ratio Ra I(1360)/I(1580) of a Raman Spectroscopy peak intensity I(1360) at a (1360) plane to a Raman Spectroscopy peak intensity I(1580) at a (1580) plane of 0.46 to 1.5.