▎ 摘　　要

NOVELTY - The preparation method of carbon-coated manganese oxide/nitrogen-doped reduced graphene oxide lithium ion battery cathode material involves dissolving manganese acetate in water and evenly mixing to prepare manganese acetate solution, adding graphene oxide to the manganese acetate solution, stirring and ultrasonically dispersing the mixture, transferring the mixture to reaction kettle and carrying out microwave hydrothermal reaction, mixing microwave hydrothermal reaction product with sucrose and transferring to PTFE reactor, filtering, washing and drying. USE - The method is useful for preparing carbon-coated manganese oxide/nitrogen-doped reduced graphene oxide lithium ion battery cathode material (claimed). ADVANTAGE - The method enables preparation of carbon-coated manganese oxide/nitrogen-doped reduced graphene oxide lithium ion battery cathode material with excellent circulation stability. DETAILED DESCRIPTION - The preparation method of carbon-coated manganese oxide/nitrogen-doped reduced graphene oxide lithium ion battery cathode material involves dissolving manganese acetate in water and evenly mixing at room temperature to prepare 2.5-8.5 %mass manganese acetate solution, adding 30-100 mg graphene oxide to the 40-70 ml manganese acetate solution, stirring and ultrasonically dispersing the mixture, transferring the mixture to reaction kettle and carrying out microwave hydrothermal reaction, mixing microwave hydrothermal reaction product with 1.2-3.5 g sucrose and transferring to PTFE reactor, filtering, washing and drying hydrothermal reaction product, heat-treating product in an atmosphere furnace to obtain solid particles having particle size of 100 nm, and coating granular manganese oxide surface with uniform carbon layer.