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. 13, 2026
Filed:
Oct. 18, 2021
Applicant:
Lg Energy Solution, Ltd., Seoul, KR;
Inventors:
Assignee:
LG ENERGY SOLUTION, LTD., Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 50/446 (2021.01); H01M 10/052 (2010.01); H01M 50/42 (2021.01); H01M 50/426 (2021.01); H01M 50/457 (2021.01);
U.S. Cl.
CPC ...
H01M 50/446 (2021.01); H01M 10/052 (2013.01); H01M 50/42 (2021.01); H01M 50/426 (2021.01); H01M 50/457 (2021.01);
Abstract
A separator for a lithium secondary battery and a lithium secondary battery including the separator, where the separator includes a porous polymer substrate; and a porous coating layer on at least one surface of the porous polymer substrate. The porous coating layer includes inorganic particles having a Mohs hardness of 3.5 to 8.5 and a binder polymer. The binder polymer includes a first binder polymer having a storage modulus at 70° C. of 500 Mpa or more. The separator shows excellent compression resistance.