▎ 摘　　要

NOVELTY - Preparing electrode material based on polyimide mesophase carbon microsphere structure comprises (i) adding diamine into the solvent under nitrogen protection and ice water bath, adding dianhydride monomer and stirring to obtain polyamic acid solution, (ii) adding polyamic acid solution into hydrothermal reaction kettle, then adding cyclization reaction catalyst, performing high-pressure hydrothermal reaction, cooling, washing with ethanol and vacuum drying to obtain polyimide powder, (iii) placing polyimide powder in vacuum tube sintering furnace, sintering, and then heating to obtain polyimide-based mesophase carbon microsphere, (iv) dispersing graphene oxide in deionized water and vacuum drying to obtain foamed graphene NG template framework agent, and (v) adding template matrix agent NG and mesophase carbon microsphere powder into ultrapure water, ultrasonically dispersing, suction filtering and vacuum drying. USE - The metod is useful for preparing electrode material based on polyimide mesophase carbon microsphere structure. ADVANTAGE - The electrode material: has uniform size, curved surface effect, increased lithium storage micropore sites while inserting lithium between layers, and improved storage performance. DETAILED DESCRIPTION - Preparing electrode material based on polyimide mesophase carbon microsphere structure comprises (i) adding diamine into the solvent under nitrogen protection and ice water bath until completely dissolved, adding dianhydride monomer and stirring for 8-12 hours to obtain polyamic acid solution, (ii) adding polyamic acid solution into hydrothermal reaction kettle, then adding cyclization reaction catalyst, performing high-pressure hydrothermal reaction, cooling to room temperature naturally, diluting with equal volume of solvent, sonicating for 0.25-0.5 hours, filtering with sand core funnel, washing with ethanol and vacuum drying for 8 hours to obtain polyimide powder, (iii) placing polyimide powder in vacuum tube sintering furnace under nitrogen or argon atmosphere, sintering at 100 degrees C for 0.5-1 hours, and then heating at 200 degrees C for 0.5-1 hour, sintering at 300oC for 0.5-1 hour, and then at 700-900 degrees C for 1-2 hours to obtain polyimide-based mesophase carbon microsphere, (iv) dispersing graphene oxide in deionized water, soaking the foamed nickel in the graphene suspension, taking out and placing in oven for vacuum dryin to obtain N- graphene oxide precursor template, reacing the template in hydrochloric acid solution to remove nickel to obtain GOF template, washing the GOF template with deionized water multiple times and placing in the hydroiodic acid solution, reacting, washing with deionized water and vacuum drying to obtain foamed graphene NG template framework agent, and (v) adding template matrix agent NG and mesophase carbon microsphere powder into ultrapure water, ultrasonically dispersing, suction filtering and vacuum drying to obtain final product. An INDEPENDENT CLAIM is also included for electrode material based on polyimide mesophase carbon microsphere structure obtained by above method.