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. 01, 2026
Filed:
Dec. 22, 2021
Lg Energy Solution, Ltd., Seoul, KR;
Taegon Kim, Daejeon, KR;
Jeonggil Kim, Daejeon, KR;
Myeongsoo Kim, Daejeon, KR;
Min Kwak, Daejeon, KR;
LG Energy Solution, Ltd., Seoul, KR;
Abstract
Herein are provided a positive electrode active material for a lithium secondary battery comprising a lithium transition metal oxide on which a crumpled graphene-derived coating layer is formed, and a method of preparing the same. The crumpled graphene has a thickness of 0.1 to 10 nm. In the positive electrode active material, the thin and uniform crumpled graphene-derived coating layer effectively imparts electrical conductivity to the lithium transition metal oxide. When the positive electrode active material is applied to a lithium secondary battery, the performance of the lithium secondary battery, particularly the discharge capacity at a high C-rate is improved.