▎ 摘　　要

NOVELTY - Method for preparing negative electrode material of black phosphorus-based stone ink composite lithium ion battery, involves (a) crushing black phosphorus to obtain black phosphorus powder, (b) adding carbon material to obtained mixture to reaction kettle for solvothermal reaction, drying and sieving reaction product after completing the reaction to obtain carbon-coated black phosphorus powder, where the carbon material comprises graphene oxide and carbon nanotubes, and (c) uniformly mixing and stirring carbon-coated black phosphorus powder with artificial graphite in organic solvent, ultrasonically dispersing, drying, performing iron removal process and screening to obtain black phosphorus-based graphite composite lithium ion battery negative electrode material. USE - Method for preparing negative electrode material of black phosphorus-based stone ink composite lithium ion battery. ADVANTAGE - The black phosphorus-based graphite composite lithium ion battery negative electrode material has high cycle life of material, reduces irreversible capacity, and increases charge and discharge efficiency.