▎ 摘　　要

NOVELTY - A sodium titanate/graphene composite cathode material preparing method involves dispersing graphene oxide in anhydrous ethanol, and adding a surface modifier at 30-60 degrees C to obtain a graphene oxide solution. The graphene oxide solution is mixed with titanium-containing compound and sodium compound, and reacted for 20-60 minutes. The reaction mixture is filtered and dried to obtain a composite precursor. Spray-drying granules and a binder are mixed with the precursor to obtain a spherical composite precursor. The precursor is sintered in an inert atmosphere to obtain the finished product. USE - Method for preparing a sodium titanate/graphene composite cathode material that is utilized for a sodium ion battery. ADVANTAGE - The method enables preparing the composite cathode material with high sodium storage capacity, long cycle life, high-current discharge performance and compaction density. DETAILED DESCRIPTION - A sodium titanate/graphene composite cathode material preparing method involves dispersing graphene oxide in anhydrous ethanol, and adding an appropriate amount of surface modifier at 30-60 degrees C under constant temperature sonication for 30-240 minutes to obtain a graphene oxide solution. The graphene oxide solution is mixed with titanium-containing compound and sodium compound, and reacted for 20-60 minutes. The reaction mixture is filtered and dried to obtain a composite precursor. Spray-drying granules and a binder are mixed with the precursor to obtain a spherical composite precursor. The precursor is sintered in an inert atmosphere to obtain the finished product.