| 摘要 |
PROBLEM TO BE SOLVED: To provide a protection film excellent in permeability and a liquid-holding property of an electrolyte and capable of suppressing increase of inner electrical resistance of a power storage device, to provide a composition and slurry for producing the protection film, and to provide a power storage device equipped with the protection film.SOLUTION: A power storage device includes: a positive electrode; a negative electrode; a protection film disposed between the positive electrode and the negative electrode; and an electrolyte, wherein the protection film includes a polymer containing a repeating unit derived from a monomer having fluorine atoms and a repeating unit derived from an unsaturated carboxylic acid. |
