公开(公告)号：US20190198839A1

公开(公告)日：2019-06-27

申请号：US16110628

申请日：2018-08-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ryo IWAMURO ,  Hironari TAKASE ,  Mitsuharu KIMURA ,  Yoshitaka YAMAGUCHI

IPC: H01M2/16 ,  H01M2/14 ,  H01M10/0585

CPC classification number: H01M2/1666 ,  H01M2/145 ,  H01M2/1626 ,  H01M2/1653 ,  H01M10/0585

Abstract: A separator including: a cellulose fiber nonwoven fabric; and a fluorine-containing resin layer including a fluorine-containing copolymer, the fluorine-containing resin layer being disposed on a surface of the cellulose fiber nonwoven fabric, wherein the fluorine-containing copolymer includes a copolymer including vinylidene fluoride and a fluorine-containing monomer other than vinylidene fluoride.

公开(公告)号：US20170214020A1

公开(公告)日：2017-07-27

申请号：US15412833

申请日：2017-01-23

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yoshitaka YAMAGUCHI ,  Mitsuharu KIMURA ,  Hironari TAKASE ,  Ryo IWAMURO

IPC: H01M2/16 ,  H01M10/0525 ,  B29C70/10 ,  H01M2/14

CPC classification number: H01M2/1626 ,  H01M2/145 ,  H01M10/0525

Abstract: A separator for a nonaqueous secondary battery includes a plurality of cellulose nanofibers and a hydroxyl group-masking component for masking hydroxyl groups on a surface of the cellulose nanofibers, wherein the cellulose nanofibers are cross-linked by the hydroxyl group-masking component to form a nonwoven fabric; as well as a nonaqueous electrolyte secondary battery including the separator, and a method of preparing the separator.

公开(公告)号：US20190214623A1

公开(公告)日：2019-07-11

申请号：US16178274

申请日：2018-11-01

Applicant: Samsung Electronics Co., Ltd.

Inventor： Mitsuharu KIMURA ,  Ryo IWAMURO ,  Yoshitaka YAMAGUCHI ,  Hironari TAKASE

IPC: H01M2/16 ,  H01M10/0525 ,  H01M4/13

Abstract: A separation membrane-integrated electrode assembly for a lithium ion secondary battery comprising an electrode active material layer; and a separation membrane on the electrode active material layer, wherein the separation membrane comprises cellulose nanofibers and a polymer as a binder, and the polymer contains a reactive group that forms a hydrogen bond with the cellulose nanofibers, as well as a method of manufacturing the separation membrane-integrated electrode assembly, and a lithium ion secondary battery including the separation membrane-integrated electrode assembly.

公开(公告)号：US20190140240A1

公开(公告)日：2019-05-09

申请号：US16184739

申请日：2018-11-08

Applicant: Samsung Electronics Co., Ltd.

Inventor： Ryo IWAMURO ,  Hironari TAKASE ,  Yoshitaka YAMAGUCHI ,  Mitsuharu KIMURA

IPC: H01M2/16

Abstract: Provided herein is a separator for a non-aqueous electrolyte secondary battery, the separator having a stacked structure including: a first layer including a polyolefin-based resin, the first layer being a porous film; a second layer including the polyolefin-based resin and a water-based polymer; and a third layer including a binder consisting of the polymer and cellulose nanofibers, and a method of making the same.