公开(公告)号：US20240332745A1

公开(公告)日：2024-10-03

申请号：US18578787

申请日：2022-07-15

Applicant: TEIJIN LIMITED

Inventor： Rika KURATANI ,  Mai MIURA ,  Satoshi NISHIKAWA

IPC: H01M50/491 ,  H01M10/0525 ,  H01M50/403 ,  H01M50/417 ,  H01M50/426 ,  H01M50/443 ,  H01M50/446 ,  H01M50/46

CPC classification number: H01M50/491 ,  H01M50/403 ,  H01M50/417 ,  H01M50/426 ,  H01M50/443 ,  H01M50/446 ,  H01M50/461 ,  H01M10/0525

Abstract: Provided is a separator for a non-aqueous secondary battery, the separator contains a porous substrate and an adhesive porous layer that is provided on one side or on both sides of the porous substrate, and that contains a polyvinylidene fluoride type resin and a filler, in which a volume ratio of the filler in the adhesive porous layer excluding pores is from 30% by volume to 67% by volume, and when differential scanning calorimetry is performed with all of the polyvinylidene fluoride type resin contained in the adhesive porous layer as a sample, two or more endothermic peaks and/or two or more exothermic peaks are observed.

公开(公告)号：US20240291103A1

公开(公告)日：2024-08-29

申请号：US18579111

申请日：2022-07-15

Applicant: TEIJIN LIMITED

Inventor： Rika KURATANI ,  Mai MIURA ,  Satoshi NISHIKAWA

IPC: H01M50/426 ,  H01M10/052 ,  H01M50/434 ,  H01M50/443 ,  H01M50/449 ,  H01M50/491

CPC classification number: H01M50/426 ,  H01M50/434 ,  H01M50/443 ,  H01M50/449 ,  H01M50/491 ,  H01M10/052

Abstract: Provided is a separator for a non-aqueous secondary battery, the separator contains a porous substrate and an adhesive porous layer that is provided on one side or on both sides of the porous substrate, and that contains a polyvinylidene fluoride type resin and an inorganic filler, in which an average primary particle size of all of the inorganic filler contained in the adhesive porous layer is from 0.01 μm to less than 0.50 μm, and when differential scanning calorimetry is performed with all of the polyvinylidene fluoride type resin contained in the adhesive porous layer as a sample, two or more endothermic peaks and/or two or more exothermic peaks are observed.

公开(公告)号：US20220190441A1

公开(公告)日：2022-06-16

申请号：US17439553

申请日：2020-02-14

Applicant: TEIJIN LIMITED

Inventor： Hiroshi SAKURAI ,  Rika KURATANI ,  Satoshi NISHIKAWA

IPC: H01M50/449 ,  H01M50/446 ,  H01M50/426 ,  H01M10/0525

Abstract: Provided is a separator for a non-aqueous secondary battery containing a porous substrate; and an adhesive porous layer that is provided on one side or on both sides of the porous substrate, and that contains a polyvinylidene fluoride type resin, an acrylic type resin and metal sulfate particles, in which an average primary particle diameter of the metal sulfate particles contained in the adhesive porous layer is from 0.01 μm to less than 0.30 μm.

公开(公告)号：US20180212220A1

公开(公告)日：2018-07-26

申请号：US15321948

申请日：2015-06-22

Applicant: Teijin Limited

Inventor： Rika KURATANI ,  Satoshi NISHIKAWA

IPC: H01M2/16

Abstract: Provided is a separator for a non-aqueous secondary battery, including: a porous substrate having an average pore diameter of from 20 nm to 100 nm; and a porous layer provided on one or both sides of the porous substrate and including a polyvinylidene fluoride resin and a filler, the porous layer including a filler in an amount of from 45% by volume to 75% by volume with respect to a total solid content of the porous layer, a weight average molecular weight of the polyvinylidene fluoride resin being 1,000,000 or more, and a peel strength between the porous substrate and the porous layer being 0.20 N/12 mm or more.

公开(公告)号：US20240322377A1

公开(公告)日：2024-09-26

申请号：US18578816

申请日：2022-07-15

Applicant: Teijin Limited

Inventor： Rika KURATANI ,  Mai MIURA ,  Satoshi NISHIKAWA

IPC: H01M50/491 ,  H01M10/0525 ,  H01M50/426 ,  H01M50/446 ,  H01M50/457 ,  H01M50/46

CPC classification number: H01M50/491 ,  H01M10/0525 ,  H01M50/426 ,  H01M50/446 ,  H01M50/457 ,  H01M50/461

Abstract: Provided is a separator for a non-aqueous secondary battery, the separator contains a porous substrate and an adhesive porous layer that is provided on one side or on both sides of the porous substrate, and that contains a polyvinylidene fluoride type resin and a filler, in which the porous substrate contains a fluorine atom, and when differential scanning calorimetry is performed with all of the polyvinylidene fluoride type resin contained in the adhesive porous layer as a sample, two or more endothermic peaks and/or two or more exothermic peaks are observed.

公开(公告)号：US20200343511A1

公开(公告)日：2020-10-29

申请号：US16960425

申请日：2018-09-18

Applicant: TEIJIN LIMITED

Inventor： Yu NAGAO ,  Megumi SATO ,  Rika KURATANI ,  Masato OKAZAKI ,  Satoshi NISHIKAWA

IPC: H01M2/16

Abstract: Provided is a separator for a non-aqueous secondary battery containing a porous substrate; and a heat resistant porous layer that is provided on one side or on both sides of the porous substrate, and that contains a binder resin and barium sulfate particles, in which an average primary particle size of the barium sulfate particles contained in the heat resistant porous layer is from 0.01 μm to less than 0.30 μm.

公开(公告)号：US20180331342A1

公开(公告)日：2018-11-15

申请号：US15774723

申请日：2016-11-08

Applicant: TEIJIN LIMITED

Inventor： Susumu HONDA ,  Satoshi NISHIKAWA ,  Takashi YOSHITOMI ,  Rika KURATANI

IPC: H01M2/16

Abstract: A separator for a non-aqueous secondary battery, containing a porous substrate, and an adhesive porous layer that is provided on one side or both sides of the porous substrate, in which the adhesive porous layer contains a polyvinylidene fluoride type resin including a vinylidene fluoride monomer unit and a hexafluoropropylene monomer unit, and the polyvinylidene fluoride type resin has an acid value of from 3.0 mgKOH/g to 20 mgKOH/g.

公开(公告)号：US20240387945A1

公开(公告)日：2024-11-21

申请号：US18578793

申请日：2022-07-15

Applicant: TEIJIN LIMITED

Inventor： Rika KURATANI ,  Mai MIURA ,  Satoshi NISHIKAWA

IPC: H01M50/426 ,  H01M50/491

Abstract: Provided is a separator for a non-aqueous secondary battery, the separator contains a porous substrate and an adhesive porous layer that contains a polyvinylidene fluoride type resin and a filler, in which a Gurley value of the separator is from 50 sec/100 mL to 200 sec/100 mL, and when differential scanning calorimetry is performed with all of the polyvinylidene fluoride type resin contained in the adhesive porous layer as a sample, two or more endothermic peaks and/or two or more exothermic peaks are observed.

公开(公告)号：US20230216143A1

公开(公告)日：2023-07-06

申请号：US17928083

申请日：2021-05-27

Applicant: Teijin Limited

Inventor： Rika KURATANI ,  Satoshi NISHIKAWA

IPC: H01M50/446 ,  H01M50/426 ,  H01M50/491 ,  H01M50/46

CPC classification number: H01M50/446 ,  H01M50/426 ,  H01M50/491 ,  H01M50/46

Abstract: A separator for a non-aqueous secondary battery contains: a porous substrate and a heat-resistant porous layer that is provided on one side or on both sides of the porous substrate, and that contains a resin and inorganic particles, in which (A) the resin contains a copolymer having a vinylidene fluoride unit and a hexafluoropropylene unit satisfying particular requirements, a content of the inorganic particles in the heat-resistant porous layer is from 50% by mass to 90% by mass, and the inorganic particles contain first inorganic particles and second inorganic particles satisfying particular size requirements, or (B) a content of the inorganic particles in the heat-resistant porous layer is from 50% by mass to 90% by mass, and the inorganic particles contain first inorganic particles that are metal sulfate (or metal hydroxide) particles and second inorganic particles that are inorganic particles other than metal sulfate (or metal hydroxide) particles.

公开(公告)号：US20220149483A1

公开(公告)日：2022-05-12

申请号：US17439610

申请日：2020-03-23

Applicant: TEIJIN LIMITED

Inventor： Megumi SATO ,  Rika KURATANI ,  Yu NAGAO ,  Masato OKAZAKI ,  Satoshi NISHIKAWA

IPC: H01M50/489 ,  H01M50/451 ,  H01M50/417 ,  H01M50/426 ,  H01M50/446

Abstract: An embodiment of the invention provide a separator for a non-aqueous secondary battery, including a porous substrate; and a heat-resistant porous layer that is provided on one side or on both sides of the porous substrate, and that contains a binder resin and barium sulfate particles, in which an average primary particle diameter of the barium sulfate particles contained in the heat-resistant porous layer is from 0.01 μm to less than 0.30 μm, and in which a volume ratio of the barium sulfate particles in the heat-resistant porous layer is from 30% by volume to less than 50% by volume.