▎ 摘　　要

NOVELTY - The preparation method involves using melamine and urea as precursors to prepare a 10mol/L melamine/urea mixed solution. The graphite powder is placed in a beaker and distilled water is added. An ultrasonic machine is used to perform ultrasound to obtain uniformly dispersed graphene oxide dispersion. The reduced graphene oxide hydrogel is completely immersed at room temperature. The graphite phase carbon nitride-graphene hybrid material is mixed and grounded with sublimed sulfur. The graphite phase is obtained by the melt diffusion method. The graphite phase carbon nitride-graphene-sulfur composite material is mixed and grinded with polyvinylidene fluoride and acetylene black to form positive electrode slurry. The positive electrode slurry is coated on the aluminum foil current collector to finally obtain the lithium sulfur battery anode material. USE - Preparation method of graphite-phase carbon nitride-graphene lithium-sulfur battery anode material. ADVANTAGE - The graphite-phase carbon nitride-graphene lithium-sulfur battery anode material has high nitrogen content and high conductivity to cooperatively limit the diffusion of lithium polysulfide, so as to improve the storage capacity of the lithium sulphur battery. The circulation stability of lithium sulfur battery is improved. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the graph of electrochemical performance tested at a current of 0.1 A/g. (Drawing includes non-English language text)