公开(公告)号：US20200266407A1

公开(公告)日：2020-08-20

申请号：US15774869

申请日：2016-11-08

Applicant: TEIJIN LIMITED

Inventor： Susumu HONDA ,  Satoshi NISHIKAWA ,  Takashi YOSHITOMI

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

Abstract: There is provided 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 A including a vinylidene fluoride monomer unit and a hexafluoropropylene monomer unit, and a polyvinylidene fluoride type resin B including a vinylidene fluoride monomer unit and a hexafluoropropylene monomer unit, a proportion of the hexafluoropropylene monomer unit in the polyvinylidene fluoride type resin A is more than 1.5 mol % and 5 mol % or less with respect to a total amount of the vinylidene fluoride monomer unit and the hexafluoropropylene monomer unit of the polyvinylidene fluoride type resin A, a proportion of the hexafluoropropylene monomer unit in the polyvinylidene fluoride type resin B is more than 5 mol % and 15 mol % or less with respect to a total amount of the vinylidene fluoride monomer unit and the hexafluoropropylene monomer unit of the polyvinylidene fluoride type resin B, and a weighted average of a weight-average molecular weight of the polyvinylidene fluoride type resin A and a weight-average molecular weight of the polyvinylidene fluoride type resin B is from 600,000 to 2,000,000.

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：US20180130988A1

公开(公告)日：2018-05-10

申请号：US15866590

申请日：2018-01-10

Applicant: TEIJIN LIMITED

Inventor： Satoshi NISHIKAWA ,  Takashi YOSHITOMI

IPC: H01M2/16 ,  B32B27/20 ,  B32B27/30 ,  B32B27/32 ,  B32B7/12 ,  H01M10/0525 ,  H01M2/14 ,  H01M10/052

CPC classification number: H01M2/1686 ,  B32B7/12 ,  B32B27/20 ,  B32B27/304 ,  B32B27/32 ,  B32B2255/26 ,  B32B2307/306 ,  B32B2307/54 ,  B32B2307/718 ,  B32B2457/10 ,  H01M2/145 ,  H01M2/1653 ,  H01M10/052 ,  H01M10/0525 ,  H01M2220/20 ,  H01M2220/30

Abstract: Provided is a separator for a nonaqueous electrolyte battery, including a porous substrate and an adhesive porous layer that is provided on one side or both sides of the porous substrate and contains an adhesive resin. The ratio of the standard deviation of the areal weight of the adhesive porous layer to the mean of the areal weight of the adhesive porous layer (g/m2) (standard deviation/mean) is 0.3 or less.

公开(公告)号：US20150380707A1

公开(公告)日：2015-12-31

申请号：US14651407

申请日：2014-03-05

Applicant: TEIJIN LIMITED

Inventor： Ayumi IWAI ,  Takashi YOSHITOMI ,  Satoshi NISHIKAWA

IPC: H01M2/16

CPC classification number: H01M2/1686 ,  H01M2/162 ,  H01M2/1653 ,  H01M10/0525

Abstract: Provided is a non-aqueous-secondary-battery separator including: a microporous membrane; and an adhesive porous layer which is provided on one or both surfaces of the microporous membrane and includes a fibrillar polyvinylidene fluoride resin, in which an average hole diameter acquired from the specific surface area of the microporous membrane is greater than 90 nm and equal to or smaller than 250 nm, peeling strength between the microporous membrane and the adhesive porous layer is equal to or greater than 0.10 N/cm, and a fibrillar diameter acquired from the specific surface area of the adhesive porous layer is from 50 nm to 70 nm.

Abstract translation: 本发明提供一种非水 - 二次电池隔膜，其包括：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，并且包括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大于90nm并等于或等于 小于250nm时，微孔膜和粘合剂多孔层之间的剥离强度等于或大于0.10N / cm，从粘合剂多孔层的比表面积获得的纤维直径为50nm至70nm。

公开(公告)号：US20240372220A1

公开(公告)日：2024-11-07

申请号：US18689969

申请日：2022-09-02

Applicant: TEIJIN LIMITED

Inventor： Shuhei ONOUE ,  Satoshi NISHIKAWA

IPC: H01M50/46 ,  H01M10/0525 ,  H01M50/42 ,  H01M50/423 ,  H01M50/431 ,  H01M50/443 ,  H01M50/446 ,  H01M50/451 ,  H01M50/457 ,  H01M50/489

Abstract: A separator for a non-aqueous secondary battery, the separator including a heat-resistant porous layer that contains an aromatic type resin and inorganic particles, and an adhesive layer that is provided on the heat-resistant porous layer, and that contains adhesive resin particles having a phenyl group-containing acrylic type resin, in which the adhesive resin particles having a phenyl group-containing acrylic type resin are adhered to the heat-resistant porous layer.

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：US20230275320A1

公开(公告)日：2023-08-31

申请号：US18006981

申请日：2021-07-29

Applicant: TEIJIN LIMITED

Inventor： Megumi SATO ,  Satoshi NISHIKAWA

IPC: H01M50/446 ,  H01M50/449 ,  H01M50/423 ,  H01M50/42 ,  H01M50/489 ,  H01M50/491

CPC classification number: H01M50/446 ,  H01M50/449 ,  H01M50/423 ,  H01M50/42 ,  H01M50/489 ,  H01M50/491

Abstract: Provided is a separator for a non-aqueous secondary battery, the separator 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 heat resistant 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, and in which a volume ratio of the barium sulfate particles in a solid content portion of the heat resistant porous layer is from 5% by volume to less than 30% by volume.

公开(公告)号：US20160036027A1

公开(公告)日：2016-02-04

申请号：US14880104

申请日：2015-10-09

Applicant: TEIJIN LIMITED

Inventor： Satoshi NISHIKAWA

IPC: H01M2/16

CPC classification number: H01M2/162 ,  B82Y30/00 ,  H01M2/1653 ,  H01M2/1686 ,  H01M10/0525 ,  Y02E60/12

Abstract: An object of the invention is to provide a separator for a nonaqueous secondary battery, which has good adhesion to electrodes and is also capable of ensuring sufficient ion permeability even after attachment to electrodes. The separator for a nonaqueous secondary battery of the invention includes a porous substrate and an adhesive porous layer that is formed on at least one side of the porous substrate and contains a polyvinylidene-fluoride-based resin. The separator for a nonaqueous secondary battery is characterized in that the adhesive porous layer has a crystal size of 1 to 13 nm.

公开(公告)号：US20240387949A1

公开(公告)日：2024-11-21

申请号：US18690056

申请日：2022-09-02

Applicant: TEIJIN LIMITED

Inventor： Shuhei ONOUE ,  Satoshi NISHIKAWA

IPC: H01M50/46 ,  H01M10/0525 ,  H01M50/42 ,  H01M50/423 ,  H01M50/426 ,  H01M50/443 ,  H01M50/446 ,  H01M50/491

Abstract: A separator for a non-aqueous secondary battery, the separator including a porous substrate, and an adhesive layer that is provided on one side or on both sides of the porous substrate, and that contains at least one selected from the group consisting of: (i) adhesive resin particles containing a phenyl group-containing acrylic type resin and a polyvinylidene fluoride type resin, and (ii) a mixture of adhesive resin particles containing a phenyl group-containing acrylic type resin and adhesive resin particles containing a polyvinylidene fluoride type resin