| 摘要 |
PROBLEM TO BE SOLVED: To provide a lithium ion battery separator having a small number of pinholes, in a lithium ion battery separator containing at least an inorganic pigment and having high heat resistance.SOLUTION: A lithium ion battery separator and a coating liquid for a lithium ion battery separator contain at least an inorganic pigment, a binder polymer, a salt of a maleic acid-acrylic acid copolymer, and a salt of carboxymethyl cellulose. A lithium ion battery separator is obtained by coating the coating liquid on a nonwoven fabric to be dried. |
