▎ 摘　　要

NOVELTY - Preparing graphene/polyimide-derived carbon anode material comprises (S1) providing an organic solvent solution of graphene, (S2) removing the air in the solution, (S3) adding pyromellitic dianhydride and melamine respectively and complete the solution to obtain a reaction liquid, (S4) subjecting the reaction solution to solvothermal in-situ polymerization to obtain a precursor of the graphene/polyimide complex material, and (S5) sequentially washing the graphene/polyimide complex material precursor with water, drying, and performing calcination to obtain the graphene/polyimide-derived carbon cathode material. USE - The cathode material is useful in preparing cathode materials for sodium ion batteries (claimed). ADVANTAGE - The cathode material has a capacity of 110 mAh, good reversible capacity, good cycle stability, and wide range of application prospects in the field of sodium ion batteries; and can be stably restored with initial capacity after 6000 cycles. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for graphene/polyimide derived carbon cathode material.