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:
Feb. 23, 2021
Filed:
Sep. 14, 2016
Applicant:
Industry-university Cooperation Foundation Hanyang University, Seoul, KR;
Inventors:
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/36 (2006.01); C01G 53/00 (2006.01); H01M 4/131 (2010.01); C01D 15/02 (2006.01); H01M 4/485 (2010.01); H01M 4/525 (2010.01); H01M 4/505 (2010.01); H01M 4/02 (2006.01); H01M 4/1391 (2010.01);
U.S. Cl.
CPC ...
H01M 4/364 (2013.01); C01D 15/02 (2013.01); C01G 53/00 (2013.01); C01G 53/006 (2013.01); C01G 53/42 (2013.01); C01G 53/44 (2013.01); C01G 53/50 (2013.01); H01M 4/131 (2013.01); H01M 4/366 (2013.01); H01M 4/485 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); C01P 2002/85 (2013.01); C01P 2002/88 (2013.01); C01P 2004/03 (2013.01); C01P 2004/61 (2013.01); C01P 2004/84 (2013.01); C01P 2004/88 (2013.01); C01P 2006/40 (2013.01); H01M 4/1391 (2013.01); H01M 2004/028 (2013.01);
Abstract
In the positive electrode active material according to the inventive concept, A positive active material for lithium secondary battery comprises a particle comprising M1, M2, and Li, wherein the particle comprises a center, a surface, and an intermediate portion between the center and the surface, wherein M1 and M2 are selected from transition metal and are different each other, and wherein concentrations of M1 and M2 have continuous concentration gradients from the center to the intermediate portion.