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.:

US 8808915 B1

Date of Patent:

Aug. 19, 2014

Filed:

Aug. 10, 2007

Rechargeable lithium battery

Applicants:

So-hyun Hur, Suwon-si, KR;

Euy-young Jung, Suwon-si, KR;

Duck-chul Hwang, Suwon-si, KR;

Yong-chul Park, Suwon-si, KR;

Jong-hwa Lee, Suwon-si, KR;

Jeom-soo Kim, Suwon-si, KR;

Jae-yul Ryu, Suwon-si, KR;

Jin-bum Kim, Suwon-si, KR;

Inventors:

So-Hyun Hur, Suwon-si, KR;

Euy-Young Jung, Suwon-si, KR;

Duck-Chul Hwang, Suwon-si, KR;

Yong-Chul Park, Suwon-si, KR;

Jong-Hwa Lee, Suwon-si, KR;

Jeom-Soo Kim, Suwon-si, KR;

Jae-Yul Ryu, Suwon-si, KR;

Jin-Bum Kim, Suwon-si, KR;

Assignee:

Samsung SDI Co., Ltd., Giheung-gu, Yongin-si, Gyeonggi-do, KR;

Attorney:

Robert E. Bushnell, Esq.

Primary Examiner:

Laura Weiner

Int. Cl.

CPC ...

H01M 4/13 (2010.01); H01M 10/052 (2010.01); H01M 4/36 (2006.01); H01M 4/131 (2010.01); H01M 4/505 (2010.01); H01M 10/0525 (2010.01); H01M 10/0568 (2010.01); H01M 4/525 (2010.01); H01M 4/134 (2010.01); H01M 4/133 (2010.01);

U.S. Cl.

CPC ...

H01M 4/525 (2013.01); H01M 4/134 (2013.01); H01M 10/052 (2013.01); H01M 4/133 (2013.01); H01M 4/364 (2013.01); H01M 4/131 (2013.01); H01M 4/505 (2013.01); Y02E 60/122 (2013.01); H01M 10/0525 (2013.01); H01M 10/0568 (2013.01); H01M 4/366 (2013.01);

Abstract

The rechargeable lithium battery includes a positive electrode which includes a positive active material, a negative electrode, and an electrolyte which includes a non-aqueous organic solvent and a lithium salt. The positive active material includes a core including at least one of a compound represented by Formula 1 and a compound represented by Formula 2, and a surface-treatment layer which is formed on the core and includes a compound represented by Formula 3. The lithium salt includes LiPFand a lithium imide-based compound.LiNiCoMnMO  (1)LiMnMO  (2)M'PO  (3)wherein each of M and M′ is independently selected from the group consisting of an alkali metal, an alkaline-earth metal, a Group 13 element, a Group 14 element, a transition element, a rare earth element, and combinations thereof, 0.95≦a≦1.1, 0≦b≦0.999, 0≦c≦0.999, 0≦d≦0.999, 0.001≦e≦0.2, 0.95≦h≦1.1, 0.001≦i≦0.2, 1≦y≦4, 0≦y≦7, and 2≦z≦30.

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