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. 30, 2025
Filed:
Jun. 19, 2020
Applicant:
Iucf-hyu (Industry-university Cooperation Foundation Hanyang University), Seoul, KR;
Inventor:
Yang-Kook Sun, Seoul, KR;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/525 (2010.01); C01G 53/40 (2025.01); C01G 53/50 (2025.01); H01M 4/36 (2006.01); H01M 4/38 (2006.01); H01M 4/50 (2010.01); H01M 4/505 (2010.01); H01M 10/052 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/525 (2013.01); C01G 53/40 (2013.01); C01G 53/50 (2013.01); H01M 4/366 (2013.01); H01M 4/382 (2013.01); H01M 4/505 (2013.01); H01M 10/052 (2013.01); C01P 2002/52 (2013.01); C01P 2004/03 (2013.01); C01P 2004/04 (2013.01); C01P 2004/50 (2013.01); C01P 2004/84 (2013.01); C01P 2006/40 (2013.01); H01M 2004/028 (2013.01);
Abstract
The present invention pertains to: a positive electrode active material precursor containing first secondary particle composed of an aggregate of a plurality of first primary particles, the positive electrode active material precursor including a first center portion represented by chemical formula 1 and a first surface portion represented by chemical formula 2, wherein the thickness of the first surface portion is 2-20% of the average radius of the positive electrode active material precursor; and a positive electrode active material containing the positive electrode active material precursor.