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:
Jan. 06, 2026
Filed:
Oct. 09, 2020
Applicant:
SK Innovation Co., Ltd., Seoul, KR;
Inventors:
Ji Ye Na, Daejeon, KR;
Min Su Koo, Daejeon, KR;
Yeon Hwa La, Daejeon, KR;
Sung Real Son, Daejeon, KR;
Assignee:
SK INNOVATION CO., LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/00 (2006.01); H01M 4/131 (2010.01); H01M 4/36 (2006.01); H01M 4/62 (2006.01); H01M 10/0525 (2010.01); H01M 10/54 (2006.01);
U.S. Cl.
CPC ...
H01M 10/54 (2013.01); H01M 4/131 (2013.01); H01M 4/364 (2013.01); H01M 4/621 (2013.01); H01M 10/0525 (2013.01);
Abstract
A method for recovering an active metal of a lithium secondary battery according to an embodiment of the present application whereby a used lithium-containing mixture is prepared, and the used lithium-containing mixture is treated with a hydrogen reduction to prepare a preliminary precursor mixture. The preliminary precursor mixture is washed with water to generate a lithium precursor including lithium hydroxide. Lithium hydroxide can be obtained by the washing treatment with high purity.