▎ 摘　　要

NOVELTY - Method for preparing a single-atom iron-loaded graphene/nanocarbon fiber axial composite material, involves (a) repeatedly washing a certain mass of bacterial cellulose film with deionized water, (b) completely immersing the cleaned bacterial cellulose film into 0.1 mol/L iron salt solution, (c) adding urea, (d) freezing the dry salt-bacterial cellulose chain macromolecular compound to obtain an aerogel of the bacteria cellulose and white flocculent urea, (e) placing the obtained gas in a gel tubular furnace, heating to not less than800degrees Celsiusand maintaining the temperature for 1 hour, naturally cooling to room temperature, and protecting the nitrogen gas protection to obtain black carbon gas, and (f) gelling the single atom iron-containing graphene/nanocarbon fiber composite material with nitrogen-doped graphene/nanocarbon fiber composite material. USE - Preparation method of biomass based graphene/nanocarbon fiber axial composite material loaded single-atom iron used for hydrogen production, hydrogen storage and hydrogen energy release. ADVANTAGE - Because the synergistic effect of the metal particles and the nitrogen atom, the Mott-Schottky effect is enhanced in the composite material, so it can improve the electro-catalysis effect of nitrogen-doped composite carbon material on the hydrogen precipitation reaction (HER).