▎ 摘　　要

NOVELTY - Preparing positive octahedral iron phosphate/graphene oxide precursor comprises (i) taking graphene oxide ultrasonically into the ultrasound field, adding ferrous chloride solution, stirring with deionized water and ethanol, shaking and vibrating; and (ii) using step (i) dispersing the graphene oxide in ferric solution edge and adding dropwise phosphate solution to the ultrasound drip edge, then transferring into a dialysis bag, dialyzing, the transferring the dialysis solution into the kettle, then heating in an oven and freezing-drying the reaction product. USE - The method is useful for preparing positive octahedral iron phosphate/graphene oxide precursor (claimed). ADVANTAGE - The method has good cycle performance and excellent rate performance. DETAILED DESCRIPTION - Preparing positive octahedral iron phosphate/graphene oxide precursor comprises (i) taking graphene oxide ultrasonically into the ultrasound field, the concentration of the graphene oxide is 3-8 mg/ml, adding ferrous chloride solution, the concentration of the ferrous chloride solution is 0.1-0.5 g/ml, stirring with deionized water and ethanol, where the material ratio of graphene oxide, ferrous chloride aqueous solution, deionized water and ethanol is 10:2-4:40:52-54 ml, shaking, vibrating during the dropping mass percentage concentration of 20-40 wt.% hydrogen peroxide and the molar ratio of iron and hydrogen peroxide is 1:1-2 to obtain a dispersing solution of graphene oxide in ferric salt; and (ii) using step (i) dispersing the graphene oxide in ferric solution edge and adding dropwise phosphate solution to the ultrasound drip edge, the molar ratio of iron and phosphrous mixture is 1:2-2.5, adjusting the pH of the reaction mixture of 3-5, allowing the reaction mixture to stand ultrasonically in ultrasound field, then transferring into a dialysis bag, dialyzing in deionized water for 3-5 days, the transferring the dialysis solution into the kettle, then heating in an oven at 150-200 degrees C for 10-20 hours and freezing-drying the reaction product.