▎ 摘　　要

NOVELTY - Preparing nitrogen-doped fluorinated modified graphene potassium electro cathode material, comprises preparing the N-layer graphene oxide aqueous solution by Hummers method, performing hydrothermal reaction on the graphene oxide aqueous solution and fluorine source, centrifuging, drying to obtain the fluorinated modified graphene, placing the fluorinated modified graphene and nitrogen source in a reaction kettle with a lining polytetrafluoroethylene, after hydrothermal reaction, dispersing in ethanol, filtering, washing, drying to obtain nitrogen-doped fluorinated modified graphene material cathode, the mass ratio of the graphene oxide to the fluorine source is 1:1-3, the mass ratio of the fluorinated modified graphene to the nitrogen source is 2-4:1. In the nitrogen-doped fluorinated modified graphene material cathode the fluorine content is 3-4%, the nitrogen content is 15-22%. USE - Preparing nitrogen-doped fluorinated modified graphene potassium electro cathode material for battery e.g. lithium battery. ADVANTAGE - The method is simple, and provides nitrogen-doped fluorinated modified graphene material cathode with excellent electrochemical performance. The method solves the problem that the existing technology preparation process is complex, high reaction temperature, complex experiment operation, large energy consumption, large reaction cost, low nitrogen content and so on. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for potassium/nitrogen doped fluorinated modified graphene battery.