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：US20230282936A1

公开(公告)日：2023-09-07

申请号：US18006669

申请日：2021-07-27

Applicant: Teijin Limited

Inventor： Wataru MORIMURA ,  Satoshi NISHIKAWA

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

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

Abstract: A non-aqueous secondary battery, containing a positive electrode, a negative electrode, an insulating layer that is a single layer contacting the positive electrode on one side and the negative electrode on another side, and an electrolyte, in which (1) the insulating layer includes a polyvinylidene fluoride type resin and inorganic particles, the Mw of the polyvinylidene fluoride type resin is 900,000 to 1,500,000, and a content ratio of the inorganic particles in the insulating layer is 50% by mass to less than 90% by mass; (2) the insulating layer includes a resin and inorganic particles and has a thickness of 5 to 30 μm, and the inorganic particles include metal sulfate particles; or (3) the insulating layer includes a polyvinylidene fluoride type resin and inorganic particles, the polyvinylidene fluoride type resin contains, as polymerizing components, vinylidene fluoride and a monomer represented by the following formula (1):

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：US20220209364A1

公开(公告)日：2022-06-30

申请号：US17602410

申请日：2020-05-15

Applicant: Teijin Limited

Inventor： Masato OKAZAKI ,  Megumi SATO ,  Satoshi NISHIKAWA

IPC: H01M50/491 ,  H01M50/403 ,  H01M10/052 ,  H01M50/423 ,  H01M50/431 ,  H01M50/449

Abstract: An embodiment of the present invention provides a separator for a non-aqueous secondary battery containing a porous substrate; and a heat-resistant porous layer that is formed on one side or on both sides of the porous substrate, and that contains a wholly aromatic polyamide, inorganic particles and an ionic material, in which the inorganic particles have an average primary particle diameter of from 0.02 μm to less than 0.1 μm or in which the inorganic particles include a metal sulfate or a metal hydroxide.

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.

公开(公告)号：US20190044118A1

公开(公告)日：2019-02-07

申请号：US16044585

申请日：2018-07-25

Applicant: TEIJIN LIMITED

Inventor： Hiroshi SAKURAI ,  Satoshi NISHIKAWA ,  Tetsuya AKAMATSU

IPC: H01M2/16 ,  H01M2/14 ,  H01M4/62 ,  H01M10/0525 ,  H01M4/13

Abstract: A separator for a non-aqueous secondary battery that is composed of a composite membrane containing a porous substrate, and a heat-resistant adhesive porous layer provided on one side or both sides of the porous substrate, in which the heat-resistant adhesive porous layer contains an acrylic type resin, and a heat-resistant resin that has a glass transition temperature of 200° C. or more and that has an amide-structure.

公开(公告)号：US20180190957A1

公开(公告)日：2018-07-05

申请号：US15738809

申请日：2016-06-30

Applicant: TEIJIN LIMITED

Inventor： Susumu HONDA ,  Satoshi NISHIKAWA ,  Takashi YOSHITOMI ,  Tomoya HAMADA ,  Yoshimitsu TAKANO

IPC: H01M2/16 ,  H01M10/0525 ,  H01M10/0587 ,  H01M2/14

CPC classification number: H01M2/162 ,  B32B5/22 ,  B32B27/20 ,  B32B27/30 ,  H01M2/145 ,  H01M2/1653 ,  H01M2/1686 ,  H01M10/0431 ,  H01M10/0525 ,  H01M10/0566 ,  H01M10/0587 ,  H01M2220/30

Abstract: A separator includes a porous substrate, and a porous layer formed on one or both surfaces of the substrate and containing a polyvinylidene fluoride type resin and a filler, in which the filler content in the porous layer is from 30 to 80% by mass with respect to the total mass of the polyvinylidene fluoride type resin and the filler, and the polyvinylidene fluoride type resin is at least one resin selected from the following resin A and B: resin A: a copolymer having a weight average molecular weight of from 100,000 to 350,000, and a content of HFP is more than 5% by mass but not more than 11% by mass; and resin B: a copolymer having a weight average molecular weight of from 100,000 to 1,000,000, in which a content of HFP is more than 11% by mass but not more than 15% by mass.

公开(公告)号：US20170005307A1

公开(公告)日：2017-01-05

申请号：US15107331

申请日：2015-01-29

Applicant: TEIJIN LIMITED

Inventor： Rika KURATANI ,  Satoshi NISHIKAWA

IPC: H01M2/16 ,  H01M10/0525

CPC classification number: H01M2/166 ,  B32B7/12 ,  B32B27/20 ,  B32B27/304 ,  B32B2262/106 ,  B32B2457/10 ,  H01M2/1686 ,  H01M10/0525

Abstract: A separator for a nonaqueous secondary battery, including a porous substrate and an adhesive porous layer that is formed on at least one side of the porous substrate and contains a carbon material and a polyvinylidene fluoride resin. The separator has an initial static voltage of 0 V as measured in accordance with JIS L1094.

Abstract translation: 一种非水系二次电池用隔膜，其特征在于，具备多孔性基材和多孔性基材的至少一面形成的含有碳材料和聚偏氟乙烯系树脂的粘合性多孔层。 分离器具有根据JIS L1094测量的0V的初始静态电压。

公开(公告)号：US20150318528A1

公开(公告)日：2015-11-05

申请号：US14651390

申请日：2014-03-05

Applicant: TEIJIN LIMITED

Inventor： Ayumi IWAI ,  Takashi YOSHITOMI ,  Satoshi NISHIKAWA

IPC: H01M2/16

CPC classification number: H01M2/168 ,  H01M2/162 ,  H01M2/1686

Abstract: Provided is a non-aqueous-secondary-battery separator including: a microporous membrane containing a fibrillar resin; and an adhesive porous layer which is provided on one or both surfaces of the microporous membrane and contains a fibrillar polyvinylidene fluoride resin, in which an average pore diameter acquired from a specific surface area of the microporous membrane is from 50 nm to 90 nm or a fibrillar diameter acquired from a specific surface area of the microporous membrane is from 150 nm to 350 nm.

Abstract translation: 本发明提供一种非水 - 二次电池隔膜，其包括：含有纤维状树脂的微孔膜; 以及粘合剂多孔层，其设置在微多孔膜的一个或两个表面上，并且包含原纤维聚偏二氟乙烯树脂，其中从微多孔膜的比表面积获得的平均孔径为50nm至90nm，或 从微孔膜的比表面积获得的纤维直径为150nm〜350nm。

公开(公告)号：US20150214528A1

公开(公告)日：2015-07-30

申请号：US14680652

申请日：2015-04-07

Applicant: TEIJIN LIMITED

Inventor： Hiroki SANO ,  Satoshi NISHIKAWA ,  Takashi YOSHITOMI

IPC: H01M2/16 ,  H01M10/0525

CPC classification number: H01M2/1686 ,  B32B23/08 ,  B32B27/08 ,  B32B27/281 ,  B32B27/285 ,  B32B27/286 ,  B32B27/288 ,  B32B27/32 ,  B32B27/34 ,  H01M2/145 ,  H01M2/1653 ,  H01M2/166 ,  H01M2/34 ,  H01M2/348 ,  H01M10/0525 ,  H01M10/0565 ,  H01M2200/10 ,  Y02T10/7011

Abstract: The present invention provides a polyolefin microporous membrane in which a degree of crystallinity is from 60 to 85%, and a tie molecular volume fraction is from 0.7 to 1.7%.

Abstract translation: 本发明提供一种结晶度为60〜85％，粘结分子体积分数为0.7〜1.7％的聚烯烃微多孔膜。