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. 29, 2014
Filed:
Mar. 08, 2005
Applicants:
Sang-min Lee, Suwon-si, KR;
Goo-jin Jeong, Suwon-si, KR;
Sung-soo Kim, Suwon-si, KR;
Yoshiaki Nitta, Suwon-si, KR;
Inventors:
Sang-Min Lee, Suwon-si, KR;
Goo-Jin Jeong, Suwon-si, KR;
Sung-Soo Kim, Suwon-si, KR;
Yoshiaki Nitta, Suwon-si, KR;
Assignee:
Samsung SDI Co., Ltd., Yongin-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/13 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
The present invention relates to a negative active material for a rechargeable lithium battery, which includes a silicon-based composite having a silicon oxide of the form SiOwhere x≦1.5 and at least one element selected from the group consisting of B, P, Li, Ge, Al, and V, and a carbonaceous material. The negative active material of the present invention can improve the cycle-life and high-rate charge/discharge characteristics of a rechargeable lithium battery.