公开(公告)号：US20240250384A1

公开(公告)日：2024-07-25

申请号：US18013588

申请日：2022-05-13

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jayeon GU ,  Hana KIM ,  Byungmin LEE ,  Minho CHO

IPC: H01M50/446 ,  H01M10/052 ,  H01M50/403 ,  H01M50/449 ,  H01M50/491

CPC classification number: H01M50/446 ,  H01M10/052 ,  H01M50/403 ,  H01M50/449 ,  H01M50/491

Abstract: Provided are a separator coating composition, a method of manufacturing a separator using the same, and a separator and a lithium battery using the same. The separator coating composition includes a binder containing an aqueous crosslinking reactive poly(vinylamide)-based copolymer, a crosslinking agent having at least bifunctionality, inorganic particles, and water, wherein the poly(vinylamide)-based copolymer includes a repeating unit derived from a vinylamide monomer and a repeating unit derived from a crosslinking reactive group-containing monomer. The separator coating composition may be used to prepare a separator capable of exhibiting high heat resistance even at a thinner coating thickness.

公开(公告)号：US20240145866A1

公开(公告)日：2024-05-02

申请号：US18013295

申请日：2022-05-13

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Soohee KIM ,  Hana KIM ,  Byungmin LEE ,  Minho CHO

IPC: H01M50/451 ,  H01M10/052 ,  H01M50/403 ,  H01M50/42 ,  H01M50/469

CPC classification number: H01M50/451 ,  H01M10/052 ,  H01M50/403 ,  H01M50/42 ,  H01M50/469

Abstract: Provided are a separator, a lithium secondary battery employing the same, and a method of preparing the separator. The separator includes: a porous substrate; and a coating layer arranged on at least one surface of the porous substrate, wherein the coating layer includes a binder and inorganic particles, the binder includes an aqueous cross-linking reactive polyacrylamide-based copolymer, and the polyacrylamide-based copolymer includes at least two cross-linking reactive groups cross-linkable with each other, a weight ratio of the binder to the inorganic particles is about 1:10 to about 1:35, and a thickness of the coating layer is greater than 0.5 μm and no greater than 4 μm. The separator has significantly improved thermal resistance characteristics and low resistance, and therefore, a lithium secondary battery with improved battery stability and lifespan characteristics at the same time may be provided.

公开(公告)号：US20210226298A1

公开(公告)日：2021-07-22

申请号：US17055507

申请日：2019-03-27

Applicant: Samsung SDI Co., Ltd. ,  SAMSUNG ELECTRONICS CO., LTD.

Inventor： Minho CHO ,  Hana KIM ,  Myungkook PARK ,  Seung Rim YANG ,  Byungmin LEE ,  Jungsue JANG ,  Bokyung JUNG

IPC: H01M50/417 ,  H01M10/0525 ,  H01M4/62 ,  H01M50/46

Abstract: The present disclosure provides a separator for a rechargeable lithium battery and a rechargeable lithium battery including same, the separator includes a porous substrate; and an adhesive layer formed on the porous substrate. The adhesive layer includes a particle-type binder having a core-shell structure including a core and a shell surrounding the core, the core includes a first polymer having a glass transition temperature of less than or equal to 30° C., the shell includes a second polymer having a glass transition temperature of greater than or equal to 40° C., and the particle-type binder has a diameter of 50 nm to 500 nm.

公开(公告)号：US20220140441A1

公开(公告)日：2022-05-05

申请号：US17435086

申请日：2019-07-26

Applicant: SAMSUNG SDI CO., LTD. ,  SAMSUNG ELECTRONICS CO., LTD.

Inventor： Minho CHO ,  Rae Sung KIM ,  Hana KIM ,  Myungkook PARK ,  Seung Rim YANG ,  Byungmin LEE ,  Jungsue JANG ,  Bokyung JUNG

IPC: H01M50/457 ,  H01M50/434 ,  H01M50/426 ,  H01M50/446

Abstract: The present disclosure relates to a separator for a lithium secondary battery, and a lithium secondary battery including same, the separator including: a porous substrate, and a heat-resistant layer on at least one surface of the porous substrate, wherein the heat-resistant layer includes a first coating layer including alumina, and a second coating layer including magnesium hydroxide, and the first coating layer and the second coating layer are consecutively disposed in a stacked form on the porous substrate.

公开(公告)号：US20210305658A1

公开(公告)日：2021-09-30

申请号：US17209692

申请日：2021-03-23

Applicant: Samsung SDI Co., Ltd.

Inventor： Minho CHO ,  Byungmin LEE ,  Kyoseon KOO ,  Esul JUNG

IPC: H01M50/446 ,  H01M50/449 ,  H01M50/42 ,  H01M50/431 ,  H01M50/489 ,  H01M50/403 ,  H01M10/0525

Abstract: Provided are a composite separator, a lithium battery including the same, and a method of manufacturing the composite separator. The composite separator includes: a porous substrate; and a coating layer on at least one surface of the porous substrate, wherein the coating layer includes a water-soluble binder and inorganic particles, and the water-soluble binder includes a polyacrylic acid metal salt.

公开(公告)号：US20240234951A9

公开(公告)日：2024-07-11

申请号：US18400115

申请日：2023-12-29

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Minho CHO ,  Byungmin LEE ,  Kyoseon KOO ,  Esul JUNG

IPC: H01M50/446 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/42 ,  H01M50/431 ,  H01M50/449 ,  H01M50/489

CPC classification number: H01M50/446 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/42 ,  H01M50/431 ,  H01M50/449 ,  H01M50/489

Abstract: Provided are a composite separator, a lithium battery including the same, and a method of manufacturing the composite separator. The composite separator includes: a porous substrate; and a coating layer on at least one surface of the porous substrate, wherein the coating layer includes a water-soluble binder and inorganic particles, and the water-soluble binder includes a polyacrylic acid metal salt.

公开(公告)号：US20240136660A1

公开(公告)日：2024-04-25

申请号：US18400115

申请日：2023-12-29

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Minho CHO ,  Byungmin LEE ,  Kyoseon KOO ,  Esul JUNG

IPC: H01M50/446 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/42 ,  H01M50/431 ,  H01M50/449 ,  H01M50/489

CPC classification number: H01M50/446 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/42 ,  H01M50/431 ,  H01M50/449 ,  H01M50/489

Abstract: Provided are a composite separator, a lithium battery including the same, and a method of manufacturing the composite separator. The composite separator includes: a porous substrate; and a coating layer on at least one surface of the porous substrate, wherein the coating layer includes a water-soluble binder and inorganic particles, and the water-soluble binder includes a polyacrylic acid metal salt.

公开(公告)号：US20240014511A1

公开(公告)日：2024-01-11

申请号：US18013299

申请日：2022-05-13

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jinyoung KIM ,  Hana KIM ,  Byungmin LEE ,  Minho CHO

IPC: H01M50/457 ,  H01M50/446 ,  H01M50/423 ,  H01M50/42 ,  H01M50/426 ,  H01M50/417 ,  H01M10/052 ,  H01M10/0525

CPC classification number: H01M50/457 ,  H01M50/446 ,  H01M50/423 ,  H01M50/42 ,  H01M50/426 ,  H01M50/417 ,  H01M10/052 ,  H01M10/0525

Abstract: The separator includes: a porous substrate; a first coating layer arranged on at least one surface of the porous substrate, the first coating layer including a binder and inorganic particles, wherein the binder includes a cross-linked product of an aqueous cross-linking reactive poly(vinylamide)-based copolymer, wherein the poly(vinylamide)-based copolymer includes repeating units derived from vinylamide monomers and repeating units derived from cross-linking reactive group-containing monomers, and is cross-linked by the cross-linking reactive groups; and a second coating layer arranged on both surfaces of the porous substrate on which the first coating layer is arranged, the second coating layer including an acrylic copolymer and a polyvinylidene fluoride-based binder in a weight ratio of greater than 1:1 and less than 1:4. The separator has high thermal resistance characteristics and enhanced electrode plate adhesion, and therefore, a lithium battery having excellent lifespan characteristics may be provided.

公开(公告)号：US20160293920A1

公开(公告)日：2016-10-06

申请号：US15082369

申请日：2016-03-28

Applicant: SAMSUNG SDI CO., LTD. ,  SAMSUNG ELECTRONICS CO., LTD.

Inventor： Bokyung JUNG ,  Byungmin LEE ,  Seungrim YANG ,  Myungkook PARK ,  Eon-Mi LEE ,  Sungsoo HAN ,  Hana KIM ,  Jungsue JANG ,  Minho CHO ,  Hyoungwoo CHOI

IPC: H01M2/16 ,  H01M10/0525

CPC classification number: H01M2/1653 ,  H01M2/166 ,  H01M2/1686 ,  H01M10/052

Abstract: A separator for a rechargeable lithium battery includes a substrate and a heat-resistant porous layer on at least one side of the substrate. The heat-resistant porous layer includes a crosslinked binder. The crosslinked binder has a cross-linked structure of a crosslinkable compound including a siloxane compound. The siloxane compound includes a siloxane resin including a unit represented by the chemical formula R1SiO3/2, where R1 is a curable reactive group, or an organic group having a curable reactive group.

Abstract translation: 用于可再充电锂电池的隔板包括在基板的至少一侧上的基板和耐热多孔层。 耐热多孔层包括交联粘合剂。 交联粘合剂具有包含硅氧烷化合物的交联性化合物的交联结构。 硅氧烷化合物包括含有由化学式R1SiO3 / 2表示的单元的硅氧烷树脂，其中R 1是可固化的反应性基团，或具有可固化的反应性基团的有机基团。

公开(公告)号：US20200287191A1

公开(公告)日：2020-09-10

申请号：US16807479

申请日：2020-03-03

Applicant: SAMSUNG SDI CO., LTD. ,  SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jungsue JANG ,  Minho CHO ,  Hana KIM ,  Myungkook PARK ,  Seung Rim YANG ,  Byungmin LEE ,  Bokyung JUNG ,  Rae Sung KIM

IPC: H01M2/16 ,  H01M10/052

Abstract: A separator for a rechargeable lithium battery and a rechargeable lithium battery, the separator including a porous substrate; and a coating layer on at least one surface of the porous substrate, wherein the coating layer includes a binder and inorganic particles, the binder including a polyurethane and a polyvinyl alcohol, and the polyurethane and the polyvinyl alcohol are included in a weight ratio of about 5:5 to about 9:1.