▎ 摘　　要

NOVELTY - One-step synthesis of two-dimensional structure tungsten trioxide coated reduced graphene cathode material comprises (i) preparing graphene dispersion liquid by ultrasonic dispersion method; (ii) dissolving the sodium tungstate solid powder in the graphene dispersion, mixing and stirring fully, and adjusting the pH value by hydrochloric acid; and (iii) transferring the mixed solution obtained into the reaction kettle, preserving temperature to obtain the precursor of tungsten trioxide-reduced graphene composite material and heating. USE - The two-dimensional structure tungsten trioxide coated reduced graphene cathode material for lithium ion secondary batteries and method is useful for producing tungsten trioxide with a two-dimensional nano sheet structure (all claimed). ADVANTAGE - The method: produces two-dimensional structure tungsten trioxide coated reduced graphene cathode material with high cycle stability and the reversible cycle specific capacity and stable structure; and produces tungsten trioxide with a two-dimensional nano sheet structure with high desorption/intercalation capacity.