▎ 摘　　要

NOVELTY - Preparing electrode based on double conduction passivation layer comprises (i) polishing the solid electrolyte substrate, and sticking polyimide tape on the edge of the electrodeless solid electrolyte to prevent the double conduction layer from flowing to the edge of the battery and cause a short circuit; (ii) mixing the organic polymer polyethylene oxide, lithium salt, graphene, and acetonitrile in a glove box filled with argon in a certain proportion; (iii) placing the mixed slurry in a magnetic stirrer and stirring for 12 hours to form a uniform slurry; (iv) coating the mixed slurry evenly on the surface of the inorganic solid electrolyte, drying it in a vacuum oven for 24 hours, and drying the solvent to form a uniform dual conduction passivation layer; and (v) tearing off the tape on the edge of the electrodeless solid electrolyte, and make sure that there is no residual double-lead adhesive on the edge of the electrolyte. USE - The method is useful for preparing electrode based on double conduction passivation layer. ADVANTAGE - The method: can mix ethylene oxide, lithium salt, and graphene in proportion to form a uniform slurry and coats on the surface of the inorganic solid electrolyte thus graphene is an electronic conductor, greatly reduces the interface impedance, and forms an interface passivation layer during the cycle which solves the stability during the cycle; forms interface layer with good viscosity which does not easy to fall off with low electrode/electrolyte interface contact and the interface resistance; and does not cause the decomposition of the polymer, so the formed interface layer structure is compact with less hole and uniform the interface film thickness which is good for stable battery circulation.