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Patent Searching and Data


Title:
SEPARATOR FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2020/138628
Kind Code:
A1
Abstract:
The present invention relates to a separator for a lithium secondary battery, and a lithium secondary battery comprising same. The separator comprises a porous substrate and a coating layer placed on at least one surface of the porous substrate, wherein the coating layer includes: a heat-resistant binder comprising a (meth)acrylic copolymer which bears 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 or (meth)acrylate and a structural unit derived from (meth)acrylamidosulfonic acid or a salt thereof; an adhesive binder having a core-shell structure; and inorganic particles, wherein the average particle diameter of the adhesive binder is 0.2 to 1.0㎛, and the average particle diameter of the inorganic particles is 0.2 to 1.0㎛.

Inventors:
KIM YONGKYOUNG (KR)
KIM GAIN (KR)
LEE JUNGYOON (KR)
CHOI YEONJOO (KR)
KIM YANGSEOB (KR)
Application Number:
KR2019/010130
Publication Date:
July 02, 2020
Filing Date:
August 09, 2019
Export Citation:
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Assignee:
SAMSUNG SDI CO LTD (KR)
International Classes:
H01M2/16; C08K3/013; C08L25/14; C08L33/02; C08L33/08; C08L33/14; C08L33/26; H01M10/052; H01M10/42
Foreign References:
KR20110104791A2011-09-23
JP2017050149A2017-03-09
KR20170129645A2017-11-27
KR20160109669A2016-09-21
KR20160061165A2016-05-31
Attorney, Agent or Firm:
PANKOREA PATENT AND LAW FIRM (KR)
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