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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 12559386 B1

PDFFull Text
Date of Patent:
Feb. 24, 2026

Filed:

Aug. 18, 2021

Method of preparing positive electrode active material

Applicant:

Lg Chem, Ltd., Seoul, KR;

Inventors:

Woo Ram Lee, Daejeon, KR;

Na Ri Kim, Daejeon, KR;

Dong Ryoung Kang, Daejeon, KR;

Sang Soon Choi, Daejeon, KR;

Assignee:

LG Chem, Ltd., Seoul, KR;

Attorney:

Lerner David LLP

Primary Examiner:

Brittany L Raymond

Int. Cl.
CPC ...
C01G 53/50 (2025.01); C01G 53/04 (2025.01); C01G 53/82 (2025.01); H01M 4/04 (2006.01); H01M 4/1391 (2010.01); H01M 4/525 (2010.01);
U.S. Cl.
CPC ...
C01G 53/50 (2013.01); C01G 53/04 (2013.01); C01G 53/82 (2025.01); H01M 4/0471 (2013.01); H01M 4/1391 (2013.01); H01M 4/525 (2013.01);
Abstract

A method of preparing a positive electrode active material includes forming a pre-sintered product by mixing a transition metal precursor having a nickel content of 70 atm % or more and a lithium raw material and performing primary sintering, and forming a lithium composite transition metal oxide by performing secondary sintering on the pre-sintered product, wherein the primary sintering is performed such that a ratio of a spinel phase of the pre-sintered product is in a range of 7% to 16%.

Find Patent Forward Citations

Lee, Woo. (2026). Method of preparing positive electrode active material (U.S. Patent No. 12559386). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12559386

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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