公开(公告)号：US20250149738A1

公开(公告)日：2025-05-08

申请号：US18823987

申请日：2024-09-04

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Jungmin LEE ,  Kyunghwa JUNG ,  Kukjoo LEE ,  Hyo-jung SONG ,  Minho CHO ,  Yunshik CHO ,  Hana KIM

IPC: H01M50/451 ,  H01M4/02 ,  H01M4/133 ,  H01M4/36 ,  H01M4/587 ,  H01M4/62 ,  H01M10/052 ,  H01M50/434 ,  H01M50/44

Abstract: A negative electrode for a rechargeable lithium battery includes a current collector, a negative electrode active material layer on the current collector, and an organic-inorganic composite layer on the negative electrode active material layer and integrated with the negative electrode active material layer. The negative electrode active material layer includes a negative electrode active material and a first binder, the organic-inorganic composite layer includes a second binder, and the first binder and the second binder include a copolymer including a structural unit derived from a (meth)acrylonitrile monomer.

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：US20190189987A1

公开(公告)日：2019-06-20

申请号：US16326885

申请日：2017-08-29

Applicant: Samsung SDI Co., Ltd. ,  SAMSUNG ELECTRONICS CO., LTD. ,  DANKOOK UNIVERSITY CHEONAN CAMPUS INDUSTRY ACADEMIC COOPERATION FOUNDATION

Inventor： Seung Rim YANG ,  Chang Hyun LEE ,  Sung Soo HAN ,  Myungkook PARK ,  Minho CHO

IPC: H01M2/16 ,  H01M4/525 ,  H01M10/0525 ,  H01M2/14

CPC classification number: H01M2/1653 ,  C08K3/22 ,  C08K2003/2227 ,  C08L81/06 ,  C08L2203/20 ,  H01M2/14 ,  H01M2/145 ,  H01M2/16 ,  H01M4/525 ,  H01M10/0525 ,  H01M2004/028

Abstract: The present invention relates to a separator for a lithium secondary battery, a method for manufacturing the separator, and a lithium secondary battery including the separator. The separator includes a porous substrate and a heat resistance porous layer positioned on at least one surface of the porous substrate, wherein the heat resistance porous layer includes a sulfonic acid group-containing polysulfone.

公开(公告)号：US20240363835A1

公开(公告)日：2024-10-31

申请号：US18504987

申请日：2023-11-08

Applicant: SAMSUNG SDI CO., LTD.

Inventor： Kyunghwa JUNG ,  Kukjoo LEE ,  Jungmin LEE ,  Yunshik CHO ,  Minho CHO ,  Hana KIM

IPC: H01M4/36 ,  H01M4/133 ,  H01M4/134 ,  H01M4/38 ,  H01M4/587 ,  H01M4/62 ,  H01M10/052

CPC classification number: H01M4/364 ,  H01M4/133 ,  H01M4/134 ,  H01M4/386 ,  H01M4/587 ,  H01M4/622 ,  H01M10/052 ,  H01M2004/027

Abstract: A negative electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same are provided. The negative electrode includes a Si—C composite negative electrode active material and a binder, wherein the binder includes a first binder that is an acrylic copolymer. The acrylic copolymer includes a first acrylic acid monomer, a second acrylonitrile monomer, and a third (meth)acrylate monomer, the first acrylic acid monomer includes acrylic acid substituted with a lithium ion, and the third (meth)acrylate monomer is a (meth)acrylate monomer including an ethylene glycol group and has a weight average molecular weight (Mw) of less than about 900 g/mol.

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：US20230268512A1

公开(公告)日：2023-08-24

申请号：US18003952

申请日：2021-10-12

Applicant: Samsung SDI Co., Ltd.

Inventor： Jin-Su HA ,  Sungjin AHN ,  San MOON ,  Seongho JEON ,  Minho CHO

IPC: H01M4/62 ,  H01M4/485 ,  H01M10/052 ,  H01M4/525 ,  H01M4/38 ,  H01M4/583

CPC classification number: H01M4/622 ,  H01M4/485 ,  H01M10/052 ,  H01M4/525 ,  H01M4/382 ,  H01M4/583 ,  H01M4/386 ,  H01M2004/028

Abstract: Provided are a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same, the positive electrode including a positive electrode active material, a conductive material, and a binder, wherein the positive electrode includes a polyimide-based polymer having a carboxyl group. The positive electrode has excellent lithium ion conductivity as well as prevents a side reaction of a positive electrode active material with an electrolyte by including a polyimide-based polymer having a carboxyl group in a positive electrode, wherein the polyimide-based polymer having high heat resistance and high stability is not phase-decomposed in the positive electrode to form a complex compound but protects the surface of the positive electrode active material.