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:
Jan. 01, 2008
Filed:
Feb. 06, 2004
Applicants:
Young-min Choi, Gyeonggi-do, KR;
Yong-nam Ham, Gyeonggi-do, KR;
Jung-joon Park, Chungcheongnam-do, KR;
Inventors:
Young-min Choi, Gyeonggi-do, KR;
Yong-nam Ham, Gyeonggi-do, KR;
Jung-joon Park, Chungcheongnam-do, KR;
Assignee:
Samsung SDI Co., Ltd., Suwon-si, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/58 (2006.01); H01M 2/00 (2006.01); H01M 4/00 (2006.01); H01M 4/50 (2006.01);
U.S. Cl.
CPC ...
Abstract
A cathode active material is prepared by mixing a transition metal compound and a lithium compound in a molar ratio of 1:1.0-1:1.2 and thermally treating the mixture while supplying COand Oin a ratio of partial pressures ranging from 1:0.001-1:1,000, and a lithium battery utilizes the cathode active material. The lithium battery ensures safety against over-charging because an overflow of current may be effectively cut off without reducing discharging capacity and cycle life characteristics.