▎ 摘　　要

NOVELTY - Two-dimensional/two-dimensional self-assembly of protonic niobate complex (HNb3O8)/reduced graphene oxide composite material for lithium ion battery, comprises e.g. mixed grinding protonic niobate complex/reduced graphene oxide composite material with polyvinylidene fluoride and acetylene black, coating uniformly on a copper foil, drying and taking as a cathode, taking lithium metal as a reference electrode and a counter electrode, then taking lithium perchlorate/ethylene carbonate-dimethyl carbonate solution as electrolyte in a glove box, and assembly into lithium ion battery. USE - Used as two-dimensional/two-dimensional self-assembly of protonic niobate complex/reduced graphene oxide composite material for lithium ion battery. ADVANTAGE - The method: is simple; consumes low energy; has low cost, excellent repeatability, and high specific capacity, high cycle stability and excellent multiplying power discharge performance of lithium ion battery. DETAILED DESCRIPTION - Two-dimensional/two-dimensional self-assembly of protonic niobate complex (HNb3O8)/reduced graphene oxide composite material for lithium ion battery, comprises mixed grinding protonic niobate complex/reduced graphene oxide composite material with polyvinylidene fluoride and acetylene black, coating uniformly on a copper foil, drying and taking as a cathode, taking lithium metal as a reference electrode and a counter electrode, then taking lithium perchlorate/ethylene carbonate-dimethyl carbonate solution as electrolyte in a glove box, and assembly into lithium ion battery, where the composite material prepared by taking organic amine tetrabutylammonium hydroxide intercalation protonic niobate complex, stripped prepared niobate (Nb3O8-(tetrabutylammonium cation (TBA(+)) nano sheet colloid suspension and graphene oxide nano-sheet sol prepared by classical Hummer method as main raw material, then mixing with graphene oxide, and stirring uniformly to obtain mixed solution, then adjusting pH using hydrochloric acid, and carrying out one-step hydrothermal reaction.