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:
Mar. 23, 2021
Filed:
Dec. 14, 2018
Applicant:
SK Innovation Co., Ltd., Seoul, KR;
Inventors:
Assignee:
SK INNOVATION CO., LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/1391 (2010.01); H01M 4/131 (2010.01); H01M 10/0525 (2010.01); H01M 4/04 (2006.01); H01M 4/505 (2010.01); H01M 4/525 (2010.01); H01M 10/058 (2010.01);
U.S. Cl.
CPC ...
H01M 4/1391 (2013.01); H01M 4/0471 (2013.01); H01M 4/131 (2013.01); H01M 4/505 (2013.01); H01M 4/525 (2013.01); H01M 10/058 (2013.01); H01M 10/0525 (2013.01); H01M 4/0404 (2013.01);
Abstract
In a method of preparing a lithium metal oxide, a preliminary lithium metal oxide is prepared. The preliminary lithium metal oxide is washed using an organic washing solution to remove lithium salt impurities. The organic washing solution includes an organic solvent and a multivalent carboxylic acid compound. A minimum distance between oxygen atoms included in different carboxylic acid groups neighboring each other in the multivalent carboxylic acid compound is 220 pm or more.