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公开(公告)号：US20220029244A1
公开(公告)日：2022-01-27
申请号：US17296516
申请日：2019-08-09
发明人： Yongkyoung KIM , Gain KIM , Jungyoon LEE , Yeonjoo CHOI , Yangseob KIM
IPC分类号： H01M50/449 , H01M50/411 , H01M50/446 , C08K3/013 , C08L25/14 , C08L33/02 , C08L33/08 , C08L33/26
摘要： The present invention relates to a separator for a lithium secondary battery, and a lithium secondary battery including 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 heat-resistant binder including a (meth)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 or (meth)acrylate, and a structural unit derived from (meth)acrylamidosulfonic acid or a salt; an adhesive binder having a core-shell structure; and inorganic particles, wherein the adhesive binder has an average particle diameter of 0.2 μm to 1.0 μm, and the inorganic particles have an average particle diameter of 0.2 μm to 1.0 μm.
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2.发明申请公开(公告)号：US20200075910A1
公开(公告)日：2020-03-05
申请号：US16558503
申请日：2019-09-03
发明人： Gain KIM , Yongkyoung KIM , Yangseob KIM , Jungyoon LEE
IPC分类号： H01M2/16 , H01M10/0525
摘要： A separator for a rechargeable lithium battery and a rechargeable lithium battery including the separator, the separator including a porous substrate; and a coating layer on at least one surface of the porous substrate, wherein the coating layer includes organic filler particles, fluorine organic binder particles, and (meth)acryl organic binder particles, an average particle diameter of the organic filler particles is equal to or greater than an average particle diameter of the fluorine organic binder particles, and the fluorine organic binder particles are coated on the porous substrate as a part of the coating layer in an amount of less than about 0.1 g/m2 per surface.
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3.发明公开公开(公告)号：US20240097181A1
公开(公告)日：2024-03-21
申请号：US18515693
申请日：2023-11-21
发明人： Gain KIM , Yongkyoung KIM , Yangseob KIM , Jungyoon LEE
IPC分类号： H01M10/0525 , H01M50/42 , H01M50/426 , H01M50/449 , H01M50/457
CPC分类号： H01M10/0525 , H01M50/42 , H01M50/426 , H01M50/449 , H01M50/457
摘要： A separator for a rechargeable lithium battery and a rechargeable lithium battery including the separator, the separator including a porous substrate; and a coating layer on at least one surface of the porous substrate, wherein the coating layer includes organic filler particles, fluorine organic binder particles, and (meth)acryl organic binder particles, an average particle diameter of the organic filler particles is equal to or greater than an average particle diameter of the fluorine organic binder particles, and the fluorine organic binder particles are coated on the porous substrate as a part of the coating layer in an amount of less than about 0.1 g/m2 per surface.
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公开(公告)号：US20210305659A1
公开(公告)日：2021-09-30
申请号：US17133186
申请日：2020-12-23
申请人： SAMSUNG SDI CO., LTD. , IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)
发明人： Gain KIM , Yeonjoo CHOI , Jayeon GU , Yangseob KIM , Jae Hoon KIM , Sun Ju MOON , Young Moo LEE
IPC分类号： H01M50/449 , H01M10/0525 , H01M10/44 , C09D133/02 , C08L79/08 , C09D7/40 , C09D7/65 , H01M50/491 , C09D133/26
摘要： This application relates to a coating layer composition and a coating layer formed using the coating layer composition. The coating layer composition includes a heat-resistant binder, a hydroxy group-containing polyimide particle, a silane cross-linking agent, and a solvent. The hydroxy group-containing polyimide particle and the functional group-containing silane cross-linking agent form a core-shell structured organic particle in which a core portion is derived from the hydroxy group-containing polyimide particles and a shell portion that is derived from the functional group-containing silane cross-linking agent. The shell portion is on the surface of the core portion in the core-shell structured organic particle. The application also relates to a separator for a rechargeable lithium battery and a rechargeable lithium battery including the separator having a coating layer formed using the coating layer composition.
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公开(公告)号：US20210226299A1
公开(公告)日：2021-07-22
申请号：US17273238
申请日：2019-07-16
发明人： Yeonjoo CHOI , Gain KIM , Yangseob KIM , Yongkyoung KIM , Dongwan SEO , Jungyoon LEE , Hyeonsun CHOI
IPC分类号： H01M50/42 , H01M50/434 , H01M50/443 , H01M50/446 , H01M50/451 , H01M10/0525
摘要： 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.
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公开(公告)号：US20240347860A1
公开(公告)日：2024-10-17
申请号：US18753917
申请日：2024-06-25
发明人： Dongwan SEO , Gain KIM , Yangseob KIM , Yongkyoung KIM , Jungyoon LEE , Yeonjoo CHOI , Hyeonsun CHOI
IPC分类号： H01M50/446 , H01M10/0525 , H01M50/443 , H01M50/449 , H01M50/489
CPC分类号： H01M50/446 , H01M10/0525 , H01M50/443 , H01M50/449 , H01M50/489
摘要： The present invention relates to a rechargeable battery comprising a positive electrode, a negative electrode, and a separator between the positive electrode and the negative electrode, wherein the positive electrode comprises a positive electrode active material selected from a lithium cobalt oxide, a lithium nickel cobalt manganese oxide, a lithium nickel cobalt aluminum oxide, or a combination thereof, wherein the separator including: a porous substrate; and a coating layer on at least one surface of the porous substrate. The porous substrate essentially consists of polyolefin and the thickness of the porous substrate is about 5 μm to about 15 μm. The coating layer faces the positive electrode and includes 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)acrylamido sulfonic acid, (meth)acrylamido sulfonic acid salt, or a combination thereof. The heat shrinkage rate in traverse direction of the separator is less than 5%.
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公开(公告)号：US20220102810A1
公开(公告)日：2022-03-31
申请号：US17416686
申请日：2019-08-09
发明人： Yongkyoung KIM , Gain KIM , Jungyoon LEE , Yeonjoo CHOI , Yangseob KIM
IPC分类号： H01M50/446 , H01M10/0525 , H01M50/449 , C08F220/56 , C08L33/12 , C09D133/12 , C09D133/26
摘要： The present invention relates to a separator for a lithium secondary battery, and a lithium secondary battery including the same, the separator including a porous substrate and a coating layer located on at least one surface of the porous substrate, wherein the coating layer includes a heat-resistant 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)acrylaminosulfonic acid, a (meth)acrylaminosulfonate or a combination thereof; an adhesive binder having a core-shell structure; and inorganic particles, wherein the adhesive binder has an average particle diameter of 0.2 μm to 1.0 μm, and the inorganic particles have an average particle diameter of 0.2 μm to 1.0 μm.
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公开(公告)号：US20190280274A1
公开(公告)日：2019-09-12
申请号：US16293500
申请日：2019-03-05
发明人： Gain KIM , Yongkyoung KIM , Jungyoon LEE
IPC分类号： H01M2/16 , H01M2/14 , H01M10/052
摘要： A separator includes a substrate and a coating layer on at least one surface of the substrate, wherein the coating layer includes first organic particles and second organic particles, and an average particle diameter of the first organic particles is larger than an average particle diameter of the second organic particles. The first organic particles protrude or extend to a height of about 0.1 μm to about 0.5 μm from a dented portion of a surface of the coating layer, and are distributed on the surface of the coating layer in an area ratio of about 5% or greater to less than 30% with respect to a total surface area of the coating layer. The separator may have improved adhesion to electrodes, insulation characteristics, and air permeability, and a battery including the separator may have improved lifespan characteristics.
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公开(公告)号：US20220037739A1
公开(公告)日：2022-02-03
申请号：US17297373
申请日：2019-08-09
发明人： Jungyoon LEE , Gain KIM , Yangseob KIM , Yongkyoung KIM , Dongwan SEO , Yeonjoo CHOI , Hyeonsun CHOI
IPC分类号： H01M50/446 , H01M10/0525 , H01M4/62
摘要： 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.
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公开(公告)号：US20220021076A1
公开(公告)日：2022-01-20
申请号：US17296528
申请日：2019-07-24
发明人： Dongwan SEO , Gain KIM , Yangseob KIM , Yongkyoung KIM , Jungyoon LEE , Yeonjoo CHOI , Hyeonsun CHOI
IPC分类号： H01M50/446 , H01M50/449 , H01M10/0525
摘要： The present invention relates to a separator for a lithium secondary battery and a lithium secondary battery including same, the separator including: a porous substrate; and a coating layer on at least one surface of the porous substrate. The coating layer includes 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)acrylamido sulfonic acid, (meth)acrylamido sulfonic acid salt, or a combination thereof. The first structural unit is included in an amount of 55 mol % to 90 mol % based on 100 mol % of the (meth)acrylic copolymer and the second structural unit and third structural unit are each independently included in 5 mol % to 40 mol % based on 100 mol % of the (meth)acrylic copolymer. The (meth)acrylic copolymer has a weight average molecular weight of 200,000 to 700,000.
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