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：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：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.