▎ 摘　　要

NOVELTY - A copper ferrite/carbon nanofiber/nitrogen-doped graphene composite electrocatalytic material is prepared by ultrasonically dispersing graphite oxide in mixed solvent, uniformly dispersing to obtain nitrogen-doped graphene oxide solution, adding polyacrylonitrile powder in N,N-dimethylformamide solvent, continuously stirring, electrostatic spinning polyacrylonitrile dispersion, pre-oxidizing, immersing in nitrogen-doped graphene oxide solution, high temperature carbonizing to obtain carbon nanofiber/nitrogen-doped graphene composite film, dissolving ferric nitrate and copper nitrate in mixed solvent to obtain salt solution, adding urea, stirring to uniformly disperse, mixing with carbon nanofiber/nitrogen-doped graphene composite film, solvent thermal reacting to obtain copper ferrite/carbon nanofiber/nitrogen-doped graphene composite material, washing, and drying. USE - Method for preparing copper ferrite/carbon nanofiber/nitrogen-doped graphene composite electrocatalytic material used as high performance catalyst material, lithium ion battery and solar battery energy device ideal electrode material. ADVANTAGE - The material has high conductivity, catalytic performance and energy storage capability. DETAILED DESCRIPTION - A copper ferrite or carbon nanofiber/nitrogen-doped graphene composite electrocatalytic material is prepared by ultrasonically dispersing graphite oxide in mixed solvent, uniformly dispersing to obtain nitrogen-doped graphene oxide solution, adding polyacrylonitrile powder in N,N-dimethylformamide solvent, continuously stirring to obtain uniform viscous dispersion, electrostatic spinning polyacrylonitrile dispersion to obtain polyacrylonitrile nanofiber film, pre-oxidizing under air atmosphere to obtain pre-oxidized polyacrylonitrile nanofiber film, immersing in nitrogen-doped graphene oxide solution to obtain polyacrylonitrile nanofiber/nitrogen-doped graphene composite film, high temperature carbonizing under inert gas protection to obtain carbon nanofiber/nitrogen-doped graphene composite film, dissolving ferric nitrate and copper nitrate in mixed solvent to obtain salt solution, adding urea, stirring to uniformly disperse for 30-50 minutes, mixing with carbon nanofiber/nitrogen-doped graphene composite film at ratio of 1:100, solvent thermal reacting to obtain copper ferrite/carbon nanofiber/nitrogen-doped graphene composite material, washing, and drying. The mixed solvent is absolute ethanol and deionized water at volume ratio of 2:5-7. The molar ratio of ferric nitrate and copper nitrate is 3-5:1. The mass ratio of urea to salt solution is 1:1.