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.:
Date of Patent:
Sep. 24, 2024
Filed:
Jun. 03, 2022
Lg Chem, Ltd., Seoul, KR;
Na Ri Park, Daejeon, KR;
Sung Soon Park, Daejeon, KR;
LG Chem, Ltd., Seoul, KR;
Abstract
A method of preparing a positive electrode active material for a secondary battery includes preparing a precursor of a composite transition metal oxide compound represented by Formula 1, and mixing the precursor, a lithium source, and a doping element source and sintering the mixture to form a doped lithium composite transition metal oxide, wherein the doping element source is a hydroxide-based compound.NiCoM(OH) [Formula 1]wherein, Mis at least one element selected from the group consisting of manganese (Mn) and aluminum (Al), and 0<x1≤0.4, 0<y≤0.4, and 0<x1+y≤0.4. The positive electrode active material satisfies a weight loss ratio at 600° C. of 1.0% or less and a weight loss ratio at 900° C. of 2.0% or less during thermogravimetric analysis (TGA).