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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 12308415 B1

PDFFull Text
Date of Patent:
May. 20, 2025

Filed:

May. 15, 2019

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

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Sung Bin Park, Daejeon, KR;

Dong Hun Lee, Daejeon, KR;

Hyung Man Cho, Daejeon, KR;

Jung Min Han, Daejeon, KR;

Jin Tae Hwang, Daejeon, KR;

Wang Mo Jung, Daejeon, KR;

Assignee:

LG Energy Solution, Ltd., Seoul, KR;

Attorney:

Lerner David LLP

Primary Examiner:

Allison Bourke

Assistant Examiner:

Kayla Elaine Clary

Int. Cl.
CPC ...
H01M 4/131 (2010.01); H01M 4/02 (2006.01); H01M 4/04 (2006.01); H01M 4/134 (2010.01); H01M 4/1391 (2010.01); H01M 4/1395 (2010.01); H01M 4/36 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01M 4/131 (2013.01); H01M 4/0471 (2013.01); H01M 4/134 (2013.01); H01M 4/1391 (2013.01); H01M 4/1395 (2013.01); H01M 4/364 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); H01M 2004/028 (2013.01);
Abstract

The present invention relates to a positive electrode active material for a secondary battery which includes a lithium composite transition metal oxide including nickel (Ni), cobalt (Co), and manganese (Mn), wherein the lithium composite transition metal oxide includes the nickel (Ni) in an amount of 65 mol % or more and the manganese (Mn) in an amount of 5 mol % or more based on a total amount of transition metals, and wherein the electrode positive active material is composed of a single particle, having a crystallite size of 180 nm or more.

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