| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium ion battery separator less in peel off of a coating layer and pin holes, in a lithium ion battery separator containing at least an inorganic pigment and having high heat resistance. ! SOLUTION: In a lithium ion battery separator having one layer or more of coating layers on at least one surface of a nonwoven fabric base material, the coating layers contain an inorganic pigment, a non-water-soluble binder and a water-soluble binder, and the nonwoven fabric base material contains a compound immobilizing the water-soluble binder. ! COPYRIGHT: (C)2014,JPO&INPIT |
