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:
Jan. 20, 2026
Filed:
Nov. 02, 2022
Lg Energy Solution, Ltd., Seoul, KR;
Eun Sol Lho, Daejeon, KR;
Gi Beom Han, Daejeon, KR;
Jong Woo Kim, Daejeon, KR;
Wang Mo Jung, Daejeon, KR;
Sang Min Park, Daejeon, KR;
Sang Wook Lee, Daejeon, KR;
Seul Ki Kim, Daejeon, KR;
Hyeong Il Kim, Daejeon, KR;
LG Energy Solution, Ltd., Seoul, KR;
Abstract
A method of preparing a positive electrode active material for a lithium secondary battery and a positive electrode active material prepared thereby. T the preparation method includes a first step of preparing a lithium transition metal oxide by mixing a lithium raw material and a transition metal precursor containing 70 mol % or more of nickel based on the total number of moles of transition metals and sintering the mixture; and a second step of washing the lithium transition metal oxide with hot water of more than 90° C., wherein, after the second step, a result of EELS analysis of a particle surface of the lithium transition metal oxide satisfies Equation 1.