SEPARATOR FOR ELECTRICITY STORAGE DEVICE

Disclosed is a separator for electricity storage devices, which achieves a balance between excellent battery performance and safety at a high level by providing a polyolefin porous film with a particle layer. The separator for electricity storage devices is characterized in that a particle-containing layer containing a cellulose resin, inorganic particles and a thermoplastic resin particles having a melting point of 100-140 DEG C is formed on at least one side of a polyolefin porous film.