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. 05, 2024
Filed:
Aug. 09, 2019
Samsung Sdi Co., Ltd., Yongin-si, KR;
Jungyoon Lee, Yongin-si, KR;
Gain Kim, Yongin-si, KR;
Yangseob Kim, Yongin-si, KR;
Yongkyoung Kim, Yongin-si, KR;
Dongwan Seo, Yongin-si, KR;
Yeonjoo Choi, Yongin-si, KR;
Hyeonsun Choi, Yongin-si, KR;
Samsung SDI Co., Ltd., Yongin-si, KR;
Abstract
The present invention relates to a separator for a lithium secondary battery, and a lithium secondary battery including the same. The separator includes a porous substrate and a coating layer on at least one surface of the porous substrate, wherein the coating layer includes a binder including a (meth)acrylic copolymer including a first structural unit derived from (meth)acrylamide, a second structural unit derived from (meth)acrylonitrile, and a third structural unit derived from (meth)acrylamidosulfonic acid, a (meth)acrylamidosulfonic acid salt or a combination thereof; first inorganic particles; and second inorganic particles, wherein the average diameter of the first inorganic particles is 400 nm to 600 nm, and the average diameter of the second inorganic particles is smaller than the average diameter of the first inorganic particles.