▎ 摘　　要

NOVELTY - A conductive agent comprises substrate and interfacial layer. The interfacial layer is coated on the surface of substrate. The coating method of the interface layer is point coating. The mass proportion of the interface layer in the conductive agent is 0.1-10%. USE - The conductive agent is useful for preparing anode and solid battery, which is used in electric automobile, electric train, electric bicycle and club car. ADVANTAGE - The conductive agent has excellent oxidation resistance, and reduces electrolyte oxidation decomposition problem, and improves the battery cycle performance. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are also included for: a preparation method of conductive agent; a manufacturing method of the anode; and a manufacturing method of solid state battery. DESCRIPTION OF DRAWING(S) - The drawing shows a structure schematic diagram of the solid-state battery of a conductive agent. 1Anode 2Material cathode 3Solid electrolyte 4Conductive agent 5Current collector 6Electrolyte membrane