▎ 摘　　要

NOVELTY - Preparation of graphene-gold composite electrode involves growing graphene directly on porous metal substrate, dissolving hydrogen tetrachloroaurate(III) tetrahydrate in deionized water, to prepare chlorine acid solution, ice-cooling chlorine acid solution and slowly stirring, immersing graphene grown metal substrate in chlorine acid solution, removing reaction product material, deionizing, washing and vacuum drying the reaction product material, drying the product after calcination, under argon atmosphere and cooling the product to obtain graphene-gold composite electrode. USE - Preparation of graphene-gold composite electrode used as air electrode of lithium-air battery (all claimed). ADVANTAGE - The graphene-gold composite electrode exhibits low polarization and good cycle stability. The preparation process is simple and the production cost is low. The energy consumption is reduced. DETAILED DESCRIPTION - Preparation of graphene-gold composite electrode involves growing graphene directly on porous metal substrate, dissolving hydrogen tetrachloroaurate(III) tetrahydrate in deionized water, to prepare chlorine acid solution, ice-cooling chlorine acid solution and slowly stirring for 0.5-2 hours, immersing graphene grown metal substrate in chlorine acid solution and allowing to stand, removing reaction product material, deionizing, washing and vacuum drying the reaction product material, drying the product after calcination at 200-500 degrees C for 1-4 hours, under argon atmosphere and cooling the product to obtain graphene-gold composite electrode. An INDEPENDENT CLAIM is included for graphene-gold composite electrode.