▎ 摘　　要

NOVELTY - Method for preparing modified nickel cobalt manganese ternary material-aluminum oxide/reduced graphene oxide material, involves (a) dissolving graphene oxide slurry in water, adding aluminum chloride, stirring, dripping aqueous ammonia, adjusting the pH to deposit in the form of aluminum hydroxide on a reduced graphene oxide sheet layer, adding nickel cobalt manganese ternary material and mixing to obtain a mixture, (b) reducing graphene oxide in the mixture by a hydrothermal reaction, during the process, (c) washing the resulted product with deionized water, vacuum drying, using capillary evaporation to adjust 3-dimensional structure of graphene materials and increasing the density of the material through the mechanism of solvent-driven flexible sheet densification, and (d) heating the vacuum-dried material, improving conductivity of reduced graphene oxide, calcining and coating on ternary material surface. USE - The method is useful for preparing modified nickel cobalt manganese ternary material-aluminum oxide/reduced graphene oxide material. ADVANTAGE - The method is simple in process, adopts mild reaction conditions, and improves the electrochemical performance of ternary coating material. DETAILED DESCRIPTION - Method for preparing modified nickel cobalt manganese ternary material-aluminum oxide/reduced graphene oxide material, involves (a) dissolving graphene oxide slurry prepared from natural flake graphite in 500 ml deionized water, stirring ultrasonically for 30 minutes, adding aluminum chloride, stirring for 30 minutes, dripping aqueous ammonia, adjusting the pH to deposit in the form of aluminum hydroxide on a reduced graphene oxide sheet layer, adding nickel cobalt manganese ternary material, stirring for 20 minutes and mixing uniformly to obtain a mixture, (b) transferring the mixture to a high pressure reaction kettle and reducing graphene oxide through a hydrothermal reaction, during the process, the aluminum hydroxide/reduce graphene oxide is uniformly coated on the surface of nickel cobalt manganese ternary material, (c) washing the resulted product with deionized water, vacuum drying, using capillary evaporation to adjust 3-dimensional structure of graphene materials and increasing the density of the material through the mechanism of solvent-driven flexible sheet densification, and (d) heating the vacuum-dried material in a tube furnace under argon gas to further remove the oxygen-containing functional groups of reduced graphene oxide, improving the conductivity of reduced graphene oxide, calcining at high temperature to make aluminum hydroxide/reduced graphene oxide decompose into aluminum oxide/reduce graphene oxide and coating on the surface of the ternary material.