▎ 摘　　要

NOVELTY - The method involves adding (S1) polyvinyl pyrrolidone and potassium ferricyanide to 0.1M hydrochloric acid solution, and stirring thoroughly and complete the reaction to obtain a clear precursor solution. The graphene oxide is added (S2) to the obtained precursor solution, and mixed thoroughly in a reaction kettle, and reacted at 80 degrees C for 24h, and filtered to obtain blue solid re-steaming and washing three times in sequence, and vacuum dried at 95 degrees C for 12h to obtain iron ferricyanide and graphene oxide composite material. The prepared iron ferricyanide and graphene composite material is put (S3) in a muffle furnace and calcined at 200-600 degrees C for 6 hours to obtain an iron oxide and graphene composite material. USE - Preparation method of iron oxide and graphene composite nano material used in electrode material of super capacitor (claimed). ADVANTAGE - The iron oxide and graphene composite material are prepared through heating and decomposition, and self-assembled into a nano-cube structure, so as to adapt to the rapid conduction of electrons and ions. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart illustrating the preparation process of iron oxide and graphene composite nano material. (Drawing includes non-English language text) Step for adding polyvinyl pyrrolidone and potassium ferricyanide to hydrochloric acid solution and stirring thoroughly and complete reaction to obtain clear precursor solution (S1) Step for adding graphene oxide to obtained precursor solution (S2) Step for putting prepared iron ferricyanide and graphene composite material in muffle furnace (S3)