NOVELTY - A separator comprises coating layer containing a polyvinylidene fluoride homopolymer, polyvinylidene fluoride-hexafluoropropylene copolymer, solvent, and inorganic particles, where the solvent being present in an amount of less than or equal to 100 parts per million in the coating layer.    USE - As separator for rechargeable battery (claimed), particularly electrochemical battery includes lithium rechargeable batteries e.g. lithium metal rechargeable batteries, lithium ion rechargeable batteries, lithium polymer rechargeable batteries, lithium ion polymer rechargeable batteries, used in mobile devices, notebook computers or electric cars.    ADVANTAGE - The coating layer exhibits an adhesive strength of greater than or equal to 20 gf/cm2 to electrodes of the battery. Within this range, the coating layer and the electrodes can be strongly attached together, which prevents short circuit of the positive and negative electrodes. In addition, in production of high output large capacity batteries, the separator improves stability and lifespan of the batteries.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following:    (1) electrochemical battery comprising positive electrode, negative electrode, electrolyte, and separator, and    (2) secondary battery comprising a positive electrode; a negative electrode, an electrolyte, and a separator interposed between the positive electrode and the negative electrode, the separator having a coating layer on it, where the coating layer being formed by dissolving a polyvinylidene fluoride-hexafluoropropylene copolymer having a weight average molecular weight of less than or equal to 800000 g/mol a first solvent to provide a first mixture, dissolving a polyvinylidene fluoride homopolymer having a weight average molecular weight of greater than or equal to 1000000 g/mol in a second solvent to provide a second mixture, combining the first mixture and the second mixture with inorganic particles to form a coating agent, applying the coating agent to the separator, and removing the solvent from the applied coating agent so as to provide the coating layer with a residual amount of solvent of less than or equal to 100 parts per million.    DESCRIPTION OF DRAWING(S) - The figure shows cross-sectional view of a separator for rechargeable battery.    Base film (110)    Separator (113)    Coating layer (130)