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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 9570739 B1

PDFFull Text
Date of Patent:
Feb. 14, 2017

Filed:

Aug. 01, 2013

Composite positive active material, method of preparing the same, and positive electrode and lithium battery containing the material

Applicant:

Samsung Sdi Co., Ltd., Yongin-si, Gyeonggi-do, KR;

Inventors:

Jay-Hyok Song, Yongin-si, KR;

Jun-Seok Park, Yongin-si, KR;

Evgeniya Matulevich, Yongin-si, KR;

Chang-Wook Kim, Yongin-si, KR;

Yong-Chan You, Yongin-si, KR;

Sun-Ho Kang, Yongin-si, KR;

Assignee:

Samsung SDI Co., Ltd., Yongin-si, KR;

Attorney:

Lewis Roca Rothgerber Christie LLP

Primary Examiner:

Patrick Ryan

Assistant Examiner:

Julian Anthony

Int. Cl.
CPC ...
H01M 4/13 (2010.01); H01M 4/58 (2010.01); H01M 4/50 (2010.01); H01M 4/00 (2006.01); H01M 4/485 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/1315 (2010.01); C01G 45/12 (2006.01); C01G 53/00 (2006.01); H01M 4/1391 (2010.01);
U.S. Cl.
CPC ...
H01M 4/485 (2013.01); C01G 45/1257 (2013.01); C01G 53/50 (2013.01); H01M 4/1315 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); C01P 2002/50 (2013.01); C01P 2002/52 (2013.01); C01P 2004/04 (2013.01); H01M 4/1391 (2013.01); Y02E 60/122 (2013.01);
Abstract

A composite positive active material including an over-lithiated lithium transition metal oxide, the over-lithiated transition metal oxide including a compound represented by Formula 1 or Formula 3: [Formula 1] xLiM″MO-(1-x)LiM'O, [Formula 3] xLiM″MO-x′LiM′O-x″LiM′″O, x+x′+x″=1, 0<x<1, 0<x′<1, 0<x″<1, 0<y≦1, and 0≦d≦0.33, is disclosed. A positive electrode and a lithium battery containing the composite positive active material, and a method of preparing the composite positive active material are also disclosed.

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