	US 12,283,715 B2
	Separator for non-aqueous secondary battery and non-aqueous secondary battery
Hiroshi Sakurai, Osaka (JP); Rika Kuratani, Osaka (JP); and Satoshi Nishikawa, Osaka (JP)
Assigned to TEIJIN LIMITED, Osaka (JP)
Appl. No. 17/439,553
Filed by TEIJIN LIMITED, Osaka (JP)
PCT Filed Feb. 14, 2020, PCT No. PCT/JP2020/005806 § 371(c)(1), (2) Date Sep. 15, 2021, PCT Pub. No. WO2020/189119, PCT Pub. Date Sep. 24, 2020.
Claims priority of application No. 2019-050778 (JP), filed on Mar. 19, 2019.
Prior Publication US 2022/0190441 A1, Jun. 16, 2022
Int. Cl. H01M 50/449 (2021.01); H01M 10/0525 (2010.01); H01M 50/409 (2021.01); H01M 50/426 (2021.01); H01M 50/443 (2021.01); H01M 50/446 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01)

CPC H01M 50/449 (2021.01) [H01M 10/0525 (2013.01); H01M 50/409 (2021.01); H01M 50/426 (2021.01); H01M 50/443 (2021.01); H01M 50/446 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01)]

8 Claims

1. A separator for a non-aqueous secondary battery, the separator comprising:

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,

wherein 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, and

wherein a content of the acrylic type resin contained in the adhesive porous layer with respect to a total amount of all resins contained in the adhesive porous layer is from 7% by mass to 40% by mass.