公开(公告)号：US10305081B2

公开(公告)日：2019-05-28

申请号：US15341256

申请日：2016-11-02

申请人： SAMSUNG SDI CO., LTD. ,  SAMSUNG ELECTRONICS CO., LTD.

发明人： Minho Cho ,  Seungrim Yang ,  Hyoungwoo Choi ,  Hana Kim ,  Jun Hyuk Moon ,  Myungkook Park ,  Byungmin Lee ,  Jungsue Jang ,  Sung Soo Han

IPC分类号： H01M2/16 ,  C08L79/04 ,  C08G73/06 ,  C09D163/00 ,  C09D179/08 ,  C08G73/10 ,  C08G73/14 ,  H01M10/0525 ,  C08K3/22

摘要： A separator for a rechargeable battery includes a porous substrate and a heat-resistance layer disposed on at least one surface of the porous substrate, wherein the heat-resistance layer includes a cross-linkable binder, and the cross-linkable binder is derived from a polymer including a structural unit including an aromatic moiety and a (meth)acrylate group; and a rechargeable lithium battery includes the same.

公开(公告)号：US10236490B2

公开(公告)日：2019-03-19

申请号：US15073684

申请日：2016-03-18

申请人： SAMSUNG SDI CO., LTD. ,  SAMSUNG ELECTRONICS CO., LTD.

发明人： Seungrim Yang ,  Byungmin Lee ,  Bokyung Jung ,  Myungkook Park ,  Eon-Mi Lee ,  Sungsoo Han ,  Hana Kim ,  Jungsue Jang ,  Minho Cho ,  Hyoungwoo Choi

IPC分类号： H01M2/16 ,  H01M10/052

摘要： A separator for a rechargeable lithium battery and a rechargeable lithium battery including the same, the separator including a substrate, and a heat-resistant porous layer on at least one side of the substrate, the heat-resistant porous layer including a crosslinked binder and a non-crosslinked binder, wherein the crosslinked binder has a cross-linked structure of at least one crosslinkable compound, the at least one crosslinkable compound including a multi-functional urethane-based compound, and the crosslinked binder and the non-crosslinked binder are included in a weight ratio of about 3:7 to about 8:2.

公开(公告)号：US20240322174A1

公开(公告)日：2024-09-26

申请号：US18482608

申请日：2023-10-06

申请人： Samsung SDI Co., Ltd.

发明人： Kukjoo Lee ,  Yunshik Cho ,  Seunghyun Oh ,  Minho Cho ,  Kyunghwa Jung ,  Jungmin Lee

IPC分类号： H01M4/62 ,  H01M4/133 ,  H01M4/38 ,  H01M10/0525

CPC分类号： H01M4/622 ,  H01M4/133 ,  H01M4/386 ,  H01M10/0525 ,  H01M2004/027

摘要： A negative electrode and a lithium battery including the same are provided. The negative electrode includes a negative electrode current collector, and a negative electrode active material layer provided on the negative electrode current collector. The negative electrode active material layer includes a negative electrode active material, a binder, and a carbon-based conductive material. The negative electrode active material includes a metal-based negative electrode active material, the binder includes an acrylic-based binder, and the carbon-based conductive material includes a fibrous carbon-based conductive material. The acrylic-based binder includes monomers having carboxyl, cyano, alkylene oxide, and/or sulfonic acid functionalities and at least a portion of the carboxyl groups are metal (e.g., lithium) carboxylate salts. Volume changes of the negative electrode material during charging/discharging may be suppressed or reduced and the capacity and lifespan characteristics of the lithium battery may be improved.

公开(公告)号：US11862812B2

公开(公告)日：2024-01-02

申请号：US17209692

申请日：2021-03-23

申请人： Samsung SDI Co., Ltd.

发明人： Minho Cho ,  Byungmin Lee ,  Kyoseon Koo ,  Esul Jung

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

CPC分类号： H01M50/446 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/42 ,  H01M50/431 ,  H01M50/449 ,  H01M50/489

摘要： 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.