公开(公告)号：US20200020908A1

公开(公告)日：2020-01-16

申请号：US16490929

申请日：2018-03-05

Applicant: Toray Industries, Inc.

Inventor： Naoya Nishimura ,  Toshihiko Kaneda ,  Yanzi Chen

IPC: H01M2/16 ,  C08L23/06 ,  H01M2/14 ,  H01M10/0525

Abstract: A polyolefin microporous membrane has a haze value measured in accordance with JIS K 7136 being 90% or less and puncture strength of 1.96 N or more. A multilayer polyolefin microporous membrane includes at least one layer of the polyolefin microporous membrane. A stacked polyolefin microporous membrane includes the polyolefin microporous membrane and one or more coating layers on at least one surface of the polyolefin microporous membrane. A battery includes a separator containing the polyolefin microporous membrane.

公开(公告)号：US20210005860A1

公开(公告)日：2021-01-07

申请号：US16489496

申请日：2018-03-05

Applicant: TORAY INDUSTRIES, INC.

Inventor： Yanzi Chen ,  Toshihiko Kaneda ,  Naoya Nishimura

IPC: H01M2/16 ,  H01M10/0525

Abstract: A polyolefin microporous membrane has excellent self-discharge characteristics when the polyolefin microporous membrane is incorporated as a separator in a battery. The polyolefin microporous membrane has a membrane thickness change rate of 0% or more and 15% or less with respect to 100% of the membrane thickness of said polyolefin microporous membrane that has not heated nor compressed, wherein said membrane thickness change rate is obtained when said polyolefin microporous membrane is compressed under heat at a temperature of 80° C. at a pressure of 1 MPa for 60 minutes.