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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 9660291 B1

PDFFull Text
Date of Patent:
May. 23, 2017

Filed:

Aug. 08, 2012

Positive active material for lithium secondary battery, method of preparing the same, and lithium secondary battery including positive active material

Applicants:

Min-han Kim, Yongin-si, KR;

Do-hyung Park, Yongin-si, KR;

Ji-hyun Kim, Yongin-si, KR;

Jeong-seop Lee, Yongin-si, KR;

Chang-hyuk Kim, Yongin-si, KR;

Seon-young Kwon, Yongin-si, KR;

Yoon-chang Kim, Yongin-si, KR;

Inventors:

Min-Han Kim, Yongin-si, KR;

Do-Hyung Park, Yongin-si, KR;

Ji-Hyun Kim, Yongin-si, KR;

Jeong-Seop Lee, Yongin-si, KR;

Chang-Hyuk Kim, Yongin-si, KR;

Seon-Young Kwon, Yongin-si, KR;

Yoon-Chang Kim, Yongin-si, KR;

Assignee:

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

Attorney:

Robert E. Bushnell, Esq.

Primary Examiner:

Ula C Ruddock

Assistant Examiner:

Osei Amponsah

Int. Cl.
CPC ...
H01M 4/131 (2010.01); H01M 10/0525 (2010.01); H01M 4/04 (2006.01); H01M 4/36 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); C01G 53/00 (2006.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 10/0525 (2013.01); C01G 53/006 (2013.01); C01G 53/50 (2013.01); H01M 4/0497 (2013.01); H01M 4/366 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); C01P 2002/88 (2013.01); C01P 2004/03 (2013.01); C01P 2004/61 (2013.01); C01P 2004/84 (2013.01); C01P 2006/40 (2013.01); H01M 2004/021 (2013.01);
Abstract

A positive active material for a lithium secondary battery, a method of preparing the same, and a lithium secondary battery including the positive active material. The positive active material includes a core part and a shell part that include a nickel-based composite oxide, and a content of nickel in the core part is larger than that in the shell part.

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