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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 12347848 B1

PDFFull Text
Date of Patent:
Jul. 01, 2025

Filed:

Jul. 20, 2020

Method for preparing positive electrode active material for lithium secondary battery and positive electrode active material prepared thereby

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Jun Ho Eom, Daejeon, KR;

Dong Joon Ahn, Daejeon, KR;

Chae Jin Lim, Daejeon, KR;

Ji Hye Kim, Daejeon, KR;

Byoung Hun Jung, Daejeon, KR;

Assignee:

LG Chem, Ltd., Seoul, KR;

Attorney:

Lerner David LLP

Primary Examiner:

Allison Bourke

Assistant Examiner:

Robert Gene West

Int. Cl.
CPC ...
H01M 4/36 (2006.01); C01B 35/12 (2006.01); C01F 7/78 (2022.01); C01G 53/50 (2025.01); H01M 4/02 (2006.01); H01M 4/04 (2006.01); H01M 4/131 (2010.01); H01M 4/1315 (2010.01); H01M 4/1391 (2010.01); H01M 4/13915 (2010.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 4/58 (2010.01); H01M 4/62 (2006.01); H01M 10/052 (2010.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); C01G 53/50 (2013.01); H01M 4/04 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/0525 (2013.01); C01P 2006/40 (2013.01); H01M 2004/028 (2013.01);
Abstract

A positive electrode material, a positive electrode including the same, a lithium battery including the same, and a method of preparing the same are disclosed herein. In some embodiments, a method of preparing a positive electrode active material including forming a first coating layer on a surface of a lithium transition metal oxide represented by Formula 1 using a basic aqueous solution containing a coating element M(where Mincludes at least one selected from sodium (Na) and aluminum (Al)), dry-mixing the lithium transition metal oxide having the first coating layer formed on a surface thereof, and a raw material containing a coating element M(where Mincludes boron (B)) and heat treating the mixture to form a second coating layer.

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