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.

Date of Patent:
Sep. 29, 2026

Filed:

Sep. 24, 2025
Applicant:

Lg Energy Solution, Ltd., Seoul, KR;

Inventors:

Young-Mo Lee, Daejeon, KR;

Kyung-Ryun Ka, Daejeon, KR;

Ji-Su Lee, Daejeon, KR;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01M 50/451 (2021.01); H01M 50/42 (2021.01); H01M 50/491 (2021.01);
U.S. Cl.
CPC ...
H01M 50/451 (2021.01); H01M 50/42 (2021.01); H01M 50/491 (2021.01);
Abstract

The present disclosure relates to a separator for an electrochemical device, which includes a coating layer having, as a binder, a copolymer including: i) a repeating unit derived from a (meth)acrylic acid monomer, a (meth)acrylate monomer, or both thereof; ii) a repeating unit derived from an acrylic monomer having an amide group; and iii) a repeating unit derived from a silane-based monomer, a monomer having a silanol group, or both thereof. In particular, the copolymer may exhibit excellent adhesion to inorganic particles by including iii) the repeating unit derived from a silane-based monomer, a monomer having the silanol group, or both thereof. Accordingly, the separator for an electrochemical device, which includes the binder, may exhibit excellent adhesion to an electrode and a low thermal shrinkage ratio.


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