A laminate that includes an active material layer including a plural of active material particles, a separator layered on the active material layer, and an organic electrolyte. The separator includes a first surface and a second surface opposed to the first surface, and includes particles containing an inorganic compound having lithium ion conductivity at 25° C. of 1×10−10 S/cm or more, and a ratio (L/Rmax) of a thickness L to a radius Rmax is greater than zero and less than or equal to five, where L and Rmax are defined in the application.