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:
Jun. 09, 2015
Filed:
Mar. 29, 2011
Applicants:
Sumihito Ishida, Yongin-si, KR;
Kyeu-yoon Sheem, Yongin-si, KR;
Eui-hwan Song, Yongin-si, KR;
Inventors:
Assignee:
Samsung SDI Co., Ltd., Giheung-gu, Yongin-si, Gyeonggi-do, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/134 (2010.01); H01M 4/58 (2010.01); C01B 31/36 (2006.01); H01M 4/38 (2006.01); H01M 4/583 (2010.01); H01M 4/36 (2006.01); H01M 10/052 (2010.01); H01M 4/1395 (2010.01); H01M 4/04 (2006.01);
U.S. Cl.
CPC ...
H01M 4/134 (2013.01); H01M 4/0421 (2013.01); H01M 4/386 (2013.01); H01M 4/583 (2013.01); C01B 31/36 (2013.01); Y02E 60/122 (2013.01); H01M 4/366 (2013.01); H01M 4/58 (2013.01); H01M 10/052 (2013.01);
Abstract
A negative active material for a rechargeable lithium battery and a rechargeable lithium battery including the same. The active material includes a silicon-containing compound represented by the following Chemical Formula 1 where Si exists with a concentration gradient from the surface to the center of the negative active material:SiC  [Chemical Formula 1]