▎ 摘　　要

NOVELTY - Preparing carbon-coated iron fluoride-graphene electrode material, involves preparing aqueous solution of graphene oxide. The oxidized graphite solid suspension is subjected to ultrasonic dispersion to form a single layer. A graphene oxide dispersion liquid with concentration of 1-8 g/l is obtained. The carbon-coated ferric oxide-graphene nanocomposites is prepared, where the concentration of ferric oxide precursor solution is 0.01-1.0 g/ml, and concentration of carbon source precursor solution is 0.03-0.03 g/ml. USE - Method for preparing carbon-coated iron fluoride-graphene electrode material (claimed). ADVANTAGE - The method enables to prepare carbon-coated iron fluoride-graphene electrode material in a simple and easy manner that is suitable for industrialization. The electrode material has discharge ratio capacity under the 100 milliAmpere hour/g, current density of 375 milliAmpere hour/g, and after 60 times of circulation, discharge specific capacity is 230 milliAmpere hour/g, which effectively improves the specific capacity and circulation stability of the electrode material. DETAILED DESCRIPTION - Preparing carbon-coated iron fluoride-graphene electrode material, involves preparing aqueous solution of graphene oxide. The oxidized graphite solid suspension is subjected to ultrasonic dispersion to form a single layer. A graphene oxide dispersion liquid with concentration of 1-8 g/l is obtained. The carbon-coated ferric oxide-graphene nanocomposites is prepared, where the concentration of ferric oxide precursor solution is 0.01-1.0 g/ml, and concentration of carbon source precursor solution is 0.03-0.03 g/ml. The ferric oxide precursor solution, the carbon source precursor solution and the oxidized graphene dispersion are mixed in a volume ratio of 1:(0.7-1):(1-5). The dispersion solution is placed into the hydrothermal reactor, at 160-200 degrees C for 6-48hours, cooled, centrifuged, ished with distilled water and freeze-dried. Finally the dry powder is placed in the protection of the atmosphere of 300-700 degrees C for 1-5 hours to obtain carbon-coated iron fluoride-graphene nanocomposites that is wrapped with filter paper and placed in the reactor. The polytetrafluoroethylene rod is placed in the reactor, and then reacted at 100-200 degrees C for 1-15 hours. After natural cooling, the sample is taken out and dried in vacuum. The dried sample is placed in a tube-furnace. The carbon-coated iron fluoride-graphene nanocomposites are prepared by calcining at 150-700 degrees C for 1-10hours in a protective atmosphere.