▎ 摘　　要

NOVELTY - Sodium ion battery nano array 3D graphene composite material comprises metal phosphides for grow nickel on a foamy nickel frame bearing 3D graphene. USE - Used as sodium ion battery nano array 3D graphene composite material. ADVANTAGE - The method is simple and environment-friendly. The material has high specific capacity, good multiplying power performance and wide industrial application. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing sodium ion battery nano array 3D graphene composite material, comprising preparing 3D graphene by chemical vapor deposition, carrying out surface treatment of foamed nickel, preparing nanosheet array of nickel hydroxide/3D graphene nano composite by hydrothermal method from the 3D graphene-loaded nickel skeleton, placing the nano-sheet array of nickel hydroxide/3D graphene composite foam nickel skeleton and inorganic phosphorus source in two quartz boats, placing the two quartz boats in both ends of the tube furnace, heating the furnace tube to 300-400 degrees C, introducing the flowing inert gas from one end of a tube furnace, supplying inorganic phosphorus source, subjecting to heat treatment and cooling to room temperature.