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. 20, 2026
Filed:
Jul. 16, 2019
Samsung Sdi Co., Ltd., Yongin-si, KR;
Yeonjoo Choi, Yongin-si, KR;
Gain Kim, Yongin-si, KR;
Yangseob Kim, Yongin-si, KR;
Yongkyoung Kim, Yongin-si, KR;
Dongwan Seo, Yongin-si, KR;
Jungyoon Lee, Yongin-si, KR;
Hyeonsun Choi, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
Disclosed is a separator for a lithium secondary battery including a porous substrate, and a coating layer on at least one surface of the porous substrate, wherein the coating layer includes an acrylic copolymer including a first structural unit derived from (meth)acrylamide, and a second structural unit including at least one of a structural unit derived from (meth)acrylic acid and (meth)acrylate, and a structural unit derived from (meth)acrylamidosulfonic acid and a salt thereof, the first structural unit is included in an amount of 55 mol % to 95 mol % with respect to 100 mol % of the acrylic copolymer, and the second structural unit is included in an amount of 5 mol % to 45 mol % with respect to 100 mol % of the acrylic copolymer, and a lithium secondary battery including the same.