US 12,230,832 B2
Separator having silane-modified polyolefin and polyethylene, and method for producing the same
Xun Zhang, Tokyo (JP); Ryo Kuroki, Tokyo (JP); Yuki Fukunaga, Tokyo (JP); and Hiromi Kobayashi, Tokyo (JP)
Assigned to Asahi Kasei Battery Separator Corporation, Tokyo (JP)
Filed by Asahi Kasei Battery Separator Corporation, Tokyo (JP)
Filed on Jun. 24, 2022, as Appl. No. 17/849,120.
Application 17/849,120 is a division of application No. 16/957,908, granted, now 11,670,822, previously published as PCT/JP2019/040342, filed on Oct. 11, 2019.
Claims priority of application No. 2018-192964 (JP), filed on Oct. 11, 2018; application No. 2018-206944 (JP), filed on Nov. 1, 2018; application No. 2019-141639 (JP), filed on Jul. 31, 2019; and application No. 2019-141651 (JP), filed on Jul. 31, 2019.
Prior Publication US 2023/0006305 A1, Jan. 5, 2023
Int. Cl. H01M 50/411 (2021.01); H01M 10/0525 (2010.01); H01M 10/0587 (2010.01); H01M 50/403 (2021.01); H01M 50/443 (2021.01); H01M 50/46 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01)
CPC H01M 50/411 (2021.01) [H01M 10/0525 (2013.01); H01M 10/0587 (2013.01); H01M 50/403 (2021.01); H01M 50/443 (2021.01); H01M 50/46 (2021.01); H01M 50/489 (2021.01); H01M 50/491 (2021.01)] 10 Claims
OG exemplary drawing
 
1. A separator for an electricity storage device that comprises a microporous membrane including a silane-modified polyolefin and polyethylene, wherein a melted membrane rupture temperature of the microporous membrane is 180° C. to 220° C. as measured by thermomechanical analysis (TMA) in fixed length mode.