▎ 摘　　要

NOVELTY - Preparation of graphene-coated electrode material nickel phosphide (Ni5P4)-reduced graphene oxide (rGO) comprises adding nickel salt and graphene oxide in solvent, stirring and mixing to obtain light green solution, adding urea, heating to react in a sealed pressure resistant reaction gas, cooling and collecting precipitates, washing and drying to obtain precursor of graphene nickel, putting the precursor and sodium hypophosphite in a tubular furnace, where sodium hypophosphite is disposed upstream, and introducing argon (Ar)/hydrogen (H2) gas stream to react in the reaction furnace. USE - The method is for preparation of graphene-coated electrode material Ni5P4-rGO used as active material for battery negative electrode plate useful for sodium ion battery (all claimed). ADVANTAGE - The method provides product, which exhibits good cycle performance and rate performance, realizes industrialization of sodium ion battery, is simple, and has low cost, high yield and high efficiency. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for graphene-coated electrode material Ni5P4-rGO.