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. 09, 2010
Filed:
Jul. 30, 2008
Applicants:
Keiko Matsubara, Yokohama, JP;
Akira Takamuku, Yokohama, JP;
Toshiaki Tsuno, Yokohama, JP;
Sung-soo Kim, Suwon-si, KR;
Inventors:
Keiko Matsubara, Yokohama, JP;
Akira Takamuku, Yokohama, JP;
Toshiaki Tsuno, Yokohama, JP;
Sung-Soo Kim, Suwon-si, KR;
Assignee:
Samsung SDI Co., Ltd., Suwon-si, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A62D 3/00 (2007.01);
U.S. Cl.
CPC ...
Abstract
Disclosed is a negative active material for a rechargeable lithium battery comprising a Si phase, a SiM phase and at least one of a X phase and a SiX phase, wherein each of phases has a crystal grain size of 100 nm and 500 nm. The element M is at least one selected from the group consisting of Ni, Co, B, Cr, Cu, Fe, Mn, Ti, and Y, the element X is at least one selected from the group consisting of Ag, Cu, and Au. However, where M is Cu, X is not Cu.