▎ 摘　　要

NOVELTY - Preparing polyimide/graphene composite lithium ion battery negative electrode material based on conjugated carbonyl involves dispersing freeze-dried graphite oxide in 1-methyl-2-pyrrolidone solution. The graphene oxide dispersion liquid is obtained. The diamine monomer is dissolved in graphene oxide dispersion liquid. The diacid anhydride monomer is added after stirring uniformly. The polycondensation reaction is performed to obtain polyimide acid graphene oxide composite solution. The polyimide acid graphene oxide composite solution is cooled to room temperature, dried to remove solvent to obtain composite of graphene oxide and precursor polyimide acid. The target product is obtained after calcined by thermal imidization method under inert gas condition. USE - Method for preparing polyimide/graphene composite lithium ion battery negative electrode material based on conjugated carbonyl. ADVANTAGE - The method enables to prepare polyimide/graphene composite lithium ion battery negative electrode material based on conjugated carbonyl that improves the discharge specific capacity and cycle stability of the lithium ion battery.