▎ 摘　　要

NOVELTY - A spherical nanocomposite material comprises sodium-vanadium fluorophosphate and graphene oxide coated on the surface of sodium-vanadium fluorophosphate having diameter of 2-3 mu m. USE - The spherical nanocomposite material is useful as anode material for lithium ion battery (claimed). ADVANTAGE - The spherical nanocomposite material has excellent cycle stability and high rate characteristics, and prolongs the service life of lithium ion battery. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation method of spherical nanocomposite material, which involves adding spherical sodium-vanadium fluorophosphate powder and graphene oxide to absolute ethanol, ultrasonically dispersing, leaving still without sedimentation to obtain graphene oxide dispersion liquid, stirring for 6-12 hours, centrifuging and drying.