| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for forming a protective film in which deterioration with charge/discharge suppresses non-uniform deterioration in a protective layer plane and excellent charge/discharge characteristics equipped with the protective layer are expressed, and also to provide a power storage device equipped with the protective layer created by the film forming method.SOLUTION: Disclosed is a film forming method which includes a binder particle (A1), a filler particle (A2) and liquid medium, and is further heated to 30 to 100°C after spraying a composition for protective layer formation which ranges 1 to 30 in the ratio (Da2/Da1) between the average particle diameter (Da1) of the binder particle (A1) and the average particle diameter (Da2) of the filler particle (A2) on a base material. |
