▎ 摘　　要

NOVELTY - Vanadium pentoxide/reduced graphene oxide coated lithium nickel cobalt manganate cathode material comprises spherical core-shell structure particle formed by vanadium pentoxide/reduced graphene oxide coated with lithium nickel cobalt manganite, where the mass ratio of vanadium pentoxide/reduced graphene oxide to lithium nickel cobalt manganate is 0.01-0.05:1, and the vanadium pentoxide/reduced graphene oxide composite material is anchored between reduced graphene oxide layers by vanadium pentoxide to form an overall coating layer in a mass ratio of 1-3:1. USE - Used as the vanadium pentoxide/reduced graphene oxide coated lithium nickel cobalt manganate cathode material. ADVANTAGE - The cathode material: has high lithium ion and electronic conductivity, and has good electrochemical performance. The method: is simple, controllable, economical, and is suitable for industrialized production. DETAILED DESCRIPTION - Vanadium pentoxide/reduced graphene oxide coated lithium nickel cobalt manganate cathode material comprises spherical core-shell structure particle formed of vanadium pentoxide/reduced graphene oxide coated with lithium nickel cobalt manganite, where the mass ratio of vanadium pentoxide/reduced graphene oxide to lithium nickel cobalt manganate is 0.01-0.05:1, the chemical formula of the lithium nickel cobalt manganese oxide LiNixCoyMn(1-x-y)O2), the vanadium pentoxide/reduced graphene oxide composite material is anchored between reduced graphene oxide layers by vanadium pentoxide to form an overall coating layer in a mass ratio of 1-3:1. An INDEPENDENT CLAIM is also included for preparing the cathode material comprising (a) adding graphene oxide and vanadium source to organic solvent for ultrasonic dispersion, carrying out solvent thermal reaction, stirring, cooling, centrifugally washing, drying, sintering, and cooling to obtain vanadium pentoxide/reduced graphene oxide composite material, (b) pumping the low nickel content nickel cobalt manganese solution into a container with high nickel content nickel cobalt or nickel cobalt manganese solution, stirring to form a mixed solution, then pumping the mixed solution into reaction containing ammonia solution in the kettle, at the same time adjusting ammonia water concentration of the reaction system with ammonia water, then adjusting the pH value of the reaction system with hydroxide precipitant solution, passing into a protective atmosphere, heating, stirring and co-precipitation reaction, aging, filtering, washing, and drying to obtain full gradient nickel cobalt manganese hydroxide precursor, (c) mixing and grinding the full-gradient nickel-cobalt-manganese hydroxide precursor with lithium source, performing two-stage sintering in an oxidizing atmosphere, and cooling to room temperature to obtain full-gradient lithium nickel-cobalt-manganate material, and (d) rotating and stirring the vanadium pentoxide/reduced graphene oxide composite material and fully graded lithium nickel cobalt manganate material, and drying. x = 0.75-0.85; y = 0.05-0.15; and 1-x-y = 0.