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:
Mar. 24, 2026
Filed:
Dec. 24, 2020
Applicant:
Iucf-hyu (Industry-university Cooperation Foundation Hanyang University), Seoul, KR;
Inventors:
Yang-Kook Sun, Seoul, KR;
Un-Hyuck Kim, Seoul, KR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/58 (2010.01); H01M 4/02 (2006.01); H01M 4/36 (2006.01); H01M 10/0525 (2010.01);
U.S. Cl.
CPC ...
H01M 4/582 (2013.01); H01M 4/364 (2013.01); H01M 4/366 (2013.01); H01M 10/0525 (2013.01); H01M 2004/028 (2013.01);
Abstract
The present invention pertains to a positive electrode active material for a lithium secondary battery, the positive electrode active material having a layered structure and containing lithium, transition metals, fluorine (F), and oxygen, wherein the layered structure includes a lithium layer consisting solely of lithium and a transition metal layer consisting solely of transition metals including nickel, the nickel includes Niand Niin terms of oxidation number, and the ratio (Ni/Ni) of Nito Niincreases as the fluorine content increases.