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. 08, 2026
Filed:
Jan. 29, 2021
Lg Energy Solution, Ltd., Seoul, KR;
Sang Min Park, Daejeon, KR;
Eun Sol Lho, Daejeon, KR;
Sung Bin Park, Daejeon, KR;
Seul Ki Kim, Daejeon, KR;
Wen Xiu Wang, Daejeon, KR;
Joong Yeop Do, Daejeon, KR;
Wang Mo Jung, Daejeon, KR;
LG Energy Solution, Ltd., Seoul, KR;
Abstract
A positive electrode active material, method of making the same, and positive electrode and lithium secondary battery include the same are disclosed herein. In some embodiments, a positive electrode active material in a form of single particles, includes a lithium transition metal oxide having nickel (Ni) in an amount greater than 50 mol % based on a total number of moles of transition metals excluding lithium, wherein a single particle has a region of 50 nm or less from a surface of the single particle along a center direction, and wherein a structure belonging to space group FD3-M and a structure belonging to space group Fm3m are formed in the region, and wherein a generation rate of fine powder having an average particle diameter (D) of 1 μm or less is in a range of 5% to 30% when the positive electrode active material is rolled at 650 kgf/cm.