▎ 摘　　要

NOVELTY - Metal-lithium composite cathode comprises a thermally and electrically conductive graphene film substrate, a metal lithium film, and an alloy layer connecting the substrate and the metal lithium film, the alloy layer is the metal lithium film and the surface of the substrate thin film layer formed after the reaction of the lithium-friendly nano thin film layer. USE - The cathode is useful for secondary battery, aerospace, computer, mobile communication device, robot and electric vehicle. ADVANTAGE - The metal-lithium composite cathode is light weight, thin, has high strength, and high energy density and good safety for lithium battery. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation method of the metal lithium cathode.