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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：US20200266415A1
公开(公告)日：2020-08-20
申请号：US16791065
申请日：2020-02-14
发明人： Jungyoon LEE , Yongkyoung KIM , Yangseob KIM
IPC分类号： H01M2/16 , H01M4/62 , H01M10/0525
摘要： A separator includes a substrate, a first layer on the substrate, the first layer including LiFePO4 (LFP) particles, and a second layer on the substrate, the second layer including organic particles having a melting point in a range of about 100° C. to about 130° C.
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公开(公告)号：US20220037741A1
公开(公告)日：2022-02-03
申请号：US17296501
申请日：2019-08-09
发明人： Jungyoon LEE , Gain KIM , Yangseob KIM , Yongkyoung KIM , Yeonjoo CHOI
IPC分类号： H01M50/451 , H01M10/0525 , H01M50/434 , H01M50/443 , H01M50/446 , H01M50/42 , H01M50/423 , C08F220/56 , C08K3/22
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, 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; first inorganic particles; and second inorganic particles, wherein the first inorganic particles have an average particle diameter of 400 to 600 nm, the average particle diameter of the second inorganic particles is smaller than the average particle diameter of the first inorganic particles.
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公开(公告)号：US20220013859A1
公开(公告)日：2022-01-13
申请号：US17294343
申请日：2019-08-08
发明人： Gain KIM , Dongwan SEO , Yeonjoo CHOI , Yangseob KIM , Yongkyoung KIM , Jungyoon LEE , Hyeonsun CHOI
IPC分类号： H01M50/42 , H01M50/491 , H01M50/449 , H01M50/443 , H01M10/052
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 (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 including at least one of structural units derived from (meth)acrylamidosulfonic acid, a (meth)acrylamidosulfonic acid salt, or a combination thereof; inorganic particles; and an organic filler; wherein the organic filler is included in an amount of 0.1 to 50 wt % based on a total amount of the organic filler and the inorganic particles.
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