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:
May. 07, 2024
Filed:
Jun. 18, 2020
Applicant:
Ecopro Bm Co., Ltd., Cheongju-si, KR;
Inventors:
Moon Ho Choi, Cheongju-si, KR;
Gyeong Jae Heo, Cheongju-si, KR;
Hyun Jong Yu, Cheongju-si, KR;
Seung Hyun Choi, Cheongju-si, KR;
Yu Gyeong Chun, Cheongju-si, KR;
Assignee:
ECOPRO BM CO., LTD., Cheongju-si, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/525 (2010.01); H01M 4/131 (2010.01); H01M 4/36 (2006.01); H01M 4/485 (2010.01); H01M 4/505 (2010.01); H01M 10/0525 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/366 (2013.01); H01M 4/485 (2013.01); H01M 10/0525 (2013.01); H01M 2004/028 (2013.01);
Abstract
The present invention relates to a positive electrode active material, in which primary particles included in a secondary particle exhibit an aspect ratio gradient which gradually increases from the center of the secondary particle to the surface thereof, and a lithium secondary battery which uses a positive electrode containing the positive electrode active material.