▎ 摘　　要

NOVELTY - A sodium ion battery electrode preparing method involves mixing graphene and active material at a mass ratio of 1:9-5:5 with ethanol, carrying out ultrasonic dispersion to obtain a dispersed material liquid, carrying out suction filtration on the dispersed material liquid through a microporous filter membrane to obtain a composite material. The composite material is dried to obtain the finished product, where the active material is a component I and/or component II. USE - Method for preparing sodium ion battery electrode. ADVANTAGE - The method enables preparing sodium ion battery electrode with improved conductivity, good stability, excellent electrochemical property, good circulation performance, high charge and discharge capacity and excellent rate performance, in simple and rapid manner. DETAILED DESCRIPTION - A sodium ion battery electrode preparing method involves mixing graphene and active material at a mass ratio of 1:9-5:5 with ethanol, carrying out ultrasonic dispersion to obtain a dispersed material liquid, carrying out suction filtration on the dispersed material liquid through a microporous filter membrane to obtain a composite material. The composite material is dried to obtain the finished product, where the active material is a component I and/or component II, where the active material is a component I and/or component II, the component I is sodium-nickel-manganese oxide (Na(2/3)Ni(1/3)Mn(2/3)O2), sodium-nickel-zirconium-phosphate (Na3NiZr(PO4)3), sodium-iron oxide, sodium-lithium-nickel-manganese oxide (NaLi(0.2)Ni(0.25)Mn(0.75)O2), sodium-vanadium-phosphate (Na3V2(PO4)3), sodium iron phosphate, sodium-manganese oxide (NaMn(0.44)O2), sodium-cobalt oxide (NaxCoO2), sodium-nickel-manganese oxide (Na1-yNi(0.5)Mn(0.5)O2) and sodium-titanium phosphate, x is 0-1, y is 0-1, and the component II is hard carbon, sodium-titanium oxide (Na2Ti3O7), disodium terephthalate and iron (II) sulfide.