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:
Jul. 09, 2024
Filed:
Jan. 30, 2020
Samsung Sdi Co., Ltd., Yongin-si, KR;
Sungsoo Kim, Yongin-si, KR;
Donghyun Kil, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
A positive active material for a rechargeable lithium battery includes a lithium nickel-based composite oxide and a lithium manganese composite oxide, wherein the positive active material includes a surface-modifying layer including lithium fluoride on the surface of at least one of the lithium nickel-based composite oxide and the lithium manganese composite oxide. The lithium nickel-based composite oxide includes a secondary particle in which a plurality of plate-shaped primary particles are agglomerated, and the secondary particle has a regular array structure in which (003) planes of the plurality of primary particles are aligned or oriented normal to the surface of the secondary particle. The lithium manganese composite oxide is present in two or more types of crystal lattice structures.