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：US20220158301A1

公开(公告)日：2022-05-19

申请号：US17439447

申请日：2020-02-13

Applicant: TEIJIN LIMITED

Inventor： Megumi SATO

IPC: H01M50/446 ,  H01M4/62 ,  H01M50/426

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 polyvinylidene fluoride type resin A that is a polyvinylidene fluoride type resin containing a tetrafluoroethylene unit; a polyvinylidene fluoride type resin B that is a polyvinylidene fluoride type resin other than the polyvinylidene fluoride type resin A; and a filler, in which an average primary particle diameter of the filler contained in the heat-resistant porous layer is from 0.01 μm to 1.0 μm.

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：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.