COMPOSITE MEMBRANE, ANODE STRUCTURE INCLUDING THE COMPOSITE MEMBRANE, LITHIUM BATTERY INCLUDING THE ANODE STRUCTURE, AND METHOD OF PREPARING THE COMPOSITE MEMBRANE

A composite membrane comprising an organic film layer; and a plurality of ion conductive inorganic particles disposed in the organic film layer, wherein the organic film layer comprises a crosslinked copolymer, and the crosslinked copolymer comprises a fluorine-containing first repeating unit and at least one repeating unit selected from a fluorine-free second repeating unit and a fluorine-free third repeating unit.