SEPARATOR FOR POWER STORAGE DEVICE, POWER STORAGE DEVICE, AND LITHIUM ION SECONDARY BATTERY

摘要

PROBLEM TO BE SOLVED: To provide a separator for a power storage device excellent in both adhesion to an electrode and rate characteristics.SOLUTION: A separator for a power storage device includes: a base material; and a layer containing a thermoplastic polymer formed in at least a part on at least one surface of the base material. The thermoplastic polymer contains a copolymer having, as monomer units, a methacrylate ester having a linear hydrocarbon group with a number of carbon atoms of 4 to 7 and other monomer copolymerizable with the methacrylate ester.SELECTED DRAWING: None