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:
Nov. 29, 2022
Filed:
Oct. 19, 2018
Applicant:
Lg Chem, Ltd., Seoul, KR;
Inventors:
Il Geun Oh, Daejeon, KR;
Eun Kyung Kim, Daejeon, KR;
Yong Ju Lee, Daejeon, KR;
Rae Hwan Jo, Daejeon, KR;
Su Min Lee, Daejeon, KR;
Jung Hyun Choi, Daejeon, KR;
Dong Hyuk Kim, Daejeon, KR;
Se Mi Park, Daejeon, KR;
Assignee:
LG ENERGY SOLUTION, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 4/04 (2006.01); H01M 4/131 (2010.01); H01M 4/58 (2010.01); H01M 4/134 (2010.01); H01M 10/0525 (2010.01); C01B 33/32 (2006.01); H01M 4/1395 (2010.01); H01M 4/02 (2006.01);
U.S. Cl.
CPC ...
H01M 4/0471 (2013.01); C01B 33/32 (2013.01); H01M 4/131 (2013.01); H01M 4/134 (2013.01); H01M 4/1395 (2013.01); H01M 4/58 (2013.01); H01M 10/0525 (2013.01); H01M 2004/021 (2013.01); H01M 2004/027 (2013.01);
Abstract
The present invention relates to a method of preparing a negative electrode active material which includes forming a mixture by mixing LiO and SiO(0<x<2) particles including SiO, forming a reaction product by performing a heat treatment on the mixture at 400° C. to 600° C., and removing a portion of lithium silicate in the reaction product by washing the reaction product.