| 摘要 |
PROBLEM TO BE SOLVED: To provide: a coating liquid for a lithium ion battery separator, suppressing strike-through of a coating liquid from a nonwoven fabric base material when a coating layer including an inorganic particle and an organic polymer binder is formed on the nonwoven fabric base material, thereby capable of enhancing productivity of a separator; and a separator obtained by coating the coating liquid on a nonwoven fabric base material, high in productivity and less in pin holes.SOLUTION: A coating liquid for a lithium ion battery separator, which is used for coating on a nonwoven fabric base material, includes an inorganic pigment, an organic polymer binder, and a non-fibrillated fiber having a fiber length of 0.10-1.20 mm and a fiber diameter of 1.0 μm or less. A lithium ion battery separator is obtained by coating the coating liquid on a nonwoven fabric base material. |
