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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 11870070 B1

PDFFull Text
Date of Patent:
Jan. 09, 2024

Filed:

Jan. 23, 2019

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

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

So Ra Baek, Daejeon, KR;

Min Suk Kang, Daejeon, KR;

Sang Wook Lee, Daejeon, KR;

Wang Mo Jung, Daejeon, KR;

Dong Hun Lee, Daejeon, KR;

Hye Lim Jeon, Daejeon, KR;

Eun Sol Lho, Daejeon, KR;

Assignee:

LG Energy Solution, Ltd.;

Attorney:

Lerner David LLP

Primary Examiner:

Adam A Arciero

Int. Cl.
CPC ...
H01M 4/525 (2010.01); H01M 4/04 (2006.01); H01M 4/36 (2006.01); H01M 4/505 (2010.01); H01M 10/0525 (2010.01); H01M 4/13915 (2010.01); H01M 4/131 (2010.01); H01M 4/1315 (2010.01); H01M 4/1391 (2010.01); H01M 4/62 (2006.01); C01G 53/00 (2006.01); C01B 35/12 (2006.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/525 (2013.01); C01B 35/121 (2013.01); C01G 53/50 (2013.01); H01M 4/0471 (2013.01); H01M 4/131 (2013.01); H01M 4/1315 (2013.01); H01M 4/1391 (2013.01); H01M 4/13915 (2013.01); H01M 4/366 (2013.01); H01M 4/505 (2013.01); H01M 4/628 (2013.01); H01M 10/0525 (2013.01); C01P 2004/80 (2013.01); C01P 2006/40 (2013.01); C01P 2006/80 (2013.01); H01M 2004/028 (2013.01); Y02E 60/10 (2013.01);
Abstract

A positive electrode active material for a secondary battery includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), and a glassy coating layer formed on surfaces of particles of the lithium composite transition metal oxide, wherein, in the lithium composite transition metal oxide, an amount of the nickel (Ni) in a total amount of transition metals is 60 mol % or more, and an amount of the manganese (Mn) is greater than an amount of the cobalt (Co), and the glassy coating layer includes a glassy compound represented by Formula 1.LiMO  [Formula 1]

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