▎ 摘　　要

NOVELTY - Preparing ultra-micro hole fluorine doped hard carbon cathode material comprises providing a precursor mixture comprising a fluorinated cotton material and oxidation graphene, then freezing and drying the precursor mixture to obtain the precursor material, performing vacuum sintering to the precursor material to obtain the ultra-microporous hard carbon material, under the fluorine atmosphere, subjecting the super-microporous hard carbon material to fluorination treatment to obtain the ultra-microporous fluorine-doped hard carbon cathode material. USE - The ultra-micro hole fluorine doped hard carbon cathode material is useful for commercialization of sodium ion battery. ADVANTAGE - The carbon cathode material: has high first effect, high sodium storage capacity and multiplying power performance. The method: is simple to process, economical, improves the low performance in technical field of sodium ion carbon cathode battery. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for ultra-micro hole fluorine doped hard carbon cathode material, is obtained by the above method.