PORÖSER FILM UND SEPARATOR FÜR SEKUNDÄRBATTERIE MIT NICHTWÄSSRIGEM ELEKTROLYT

摘要

Provided is a porous film formed from a polyolefin-based resin containing an ethylene-±-olefin copolymer including a structural unit derived from ethylene and a structural unit derived from one or more kinds of monomers selected from ±-olefins having 4 to 10 carbon atoms, wherein a shutdown temperature is 125°C or lower.