▎ 摘　　要

NOVELTY - Preparing porous zinc molybdate/zinc oxide/graphene composite material comprises (i) dispersing graphite oxide in deionized water ultrasonically, (ii) dissolving tris(hydroxymethyl)aminomethane hydrochloride and cationic polyelectrolyte in sodium chloride solution, introducing graphene oxide dispersion, centrifuging and washing with deionized water, ultrasonically dispersing the precipitate in deionized water (iii) introducing zinc salt to deionized water, stirring and dissolving, (iii) introducing potassium octacyanomolybdate into deionized water, (iii) introducing solution and stirring, centrifuging, washing precipitate with deionized water, freeze-drying; where the volume ratio of solution a, solution b and cationic polyelectrolyte modified graphene oxide dispersion 2:1-4:7, preferably 2:2:7;3-2 , the product is obtained by heating at 600-800 degreesC for 2-6 hours, preferably 700 degreesC for 2 hours in an inert gas. USE - The porous zinc molybdate/zinc oxide/graphene composite material is useful to the cathode of a lithium-ion battery (claimed). ADVANTAGE - The material has excellent electrochemical lithium storage performance. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for porous zinc molybdate/zinc oxide/graphene composite material prepared by above mentioned method