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:
Jun. 08, 2021
Filed:
Jan. 10, 2018
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Dong Hun Lee, Daejeon, KR;
Dae Jin Lee, Daejeon, KR;
Ji Hoon Ryu, Daejeon, KR;
Gi Beom Han, Daejeon, KR;
Dong Hwi Kim, Daejeon, KR;
Wang Mo Jung, Daejeon, KR;
Sang Wook Lee, Daejeon, KR;
Eun Sol Lho, Daejeon, KR;
Assignee:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01M 4/131 (2010.01); H01M 10/54 (2006.01); H01M 10/052 (2010.01); H01M 4/505 (2010.01); H01M 10/42 (2006.01); H01M 10/52 (2006.01); C22B 7/00 (2006.01); C22B 1/00 (2006.01); H01M 50/691 (2021.01);
U.S. Cl.
CPC ...
H01M 10/4242 (2013.01); C22B 1/005 (2013.01); C22B 7/001 (2013.01); H01M 4/131 (2013.01); H01M 4/505 (2013.01); H01M 10/52 (2013.01); H01M 10/54 (2013.01); H01M 50/691 (2021.01); H01M 10/052 (2013.01); Y02W 30/84 (2015.05);
Abstract
The present invention relates to a method for recovering a positive electrode active material from a lithium secondary battery including: 1) separating a positive electrode into a collector and a positive electrode part; 2) removing an organic substance by firing the separated positive electrode part; 3) washing the fired resultant and removing remaining fluorine (F); 4) adding a lithium-containing material into the washed resultant and firing to recover a lithium transition metal oxide.