▎ 摘　　要

NOVELTY - A peach kernel shaped tin oxide graphene-carbon composite material preparing method involves preparing tin oxide-graphene precursor by dispersing graphene oxide and tin chloride pentahydrate in deionized water, and mixing mixed together, after ultrasonication, stirring to obtain graphene oxide dispersion and a uniform mixed solution of a tin, spray-drying mixed solution to obtain precursor. Hydrothermal method is performed by dispersing tin oxide-graphene precursor in carbon source, stirring under thermostat hydrothermal condition followed by calcinicing to obtain finished product. USE - Method for preparing peach kernel shaped tin oxide graphene-carbon composite material that is utilized in lithium battery. ADVANTAGE - The method enables preparing composite material with excellent circulation property. DETAILED DESCRIPTION - A peach kernel shaped tin oxide graphene-carbon composite material preparing method involves preparing tin oxide-graphene precursor by dispersing 0.5-1.25g/l graphene oxide and 0.05-0.1 mol/l tin chloride pentahydrate in deionized water, and mixing mixed together, after ultrasonication, stirring to obtain graphene oxide dispersion and a uniform mixed solution of a tin, spray-drying mixed solution at an inlet temperature of 150-180 degrees C for 1-10 ml/minute, to obtain precursor. Hydrothermal method is performed by dispersing tin oxide-graphene precursor in 0.035-0.070 mol/L carbon source, stirring for 12-24 hours, under thermostat hydrothermal condition at 180-200 degrees C for 3-10 hours followed by calcinicing at 450-600 degrees C to obtain finished product.