▎ 摘　　要

NOVELTY - Lithium battery comprises a cathode, an anode, a liquid-impermeable ion-conductive membrane between the cathode and the anode, and an interlayer comprises a metal-carbon composite between the anode and the liquid-impermeable ion-conductive membrane. The metal-carbon composite (10) comprises a carbonaceous material (11), a metal (12) chemically bonded to the carbonaceous material, and a metal sulfide (13), a metal fluoride (14), or a combination chemically bonded to the carbonaceous material. USE - Lithium battery, e.g. solid state battery (claimed), used in various applications, such as in electric vehicles. ADVANTAGE - The lithium secondary battery has high-performance secondary batteries having high energy density, and also improves charge/discharge efficiency and capacity. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: A method for preparing a lithium battery, which involves: providing a composition for an interlayer, which comprises a metal-carbon composite, a binder, and a solvent; coating the composition on a first surface of a liquid-impermeable ion-conductive membrane; drying the composition to provide an interlayer; arranging an anode on the interlayer; and arranging a cathode on an opposite second surface of the liquid-impermeable ion-conductive membrane to prepare the lithium battery. A metal-carbon composite used in an interlayer of a battery, which comprises a carbonaceous material having an average particle diameter of 10-900 nanometers, where metal comprises carbon black, a vapor grown carbon fiber, acetylene black, activated furnace black, Ketjen black, a carbon nanofiber, natural graphite, artificial graphite, a carbon nanotube and graphene. The metal having a size of 0.5-300 nanometers chemically bonded to the carbonaceous material, and preferably having a size of 0.1-10 nanometers chemically bonded to the carbonaceous material, where total amount of the metal and the metal sulfide and the metal fluoride is 15-40 wt.%, based on a total weight of the metal-carbon composite. DESCRIPTION OF DRAWING(S) - The drawing shows schematic view of structure of an interlayer including metal-carbon composite. 10Metal-carbon composite 11Carbonaceous material 12Metal 13Metal sulfide 14Metal fluoride