▎ 摘　　要

NOVELTY - Continuously preparing highly dispersed nano-cobalt/reduced graphene oxide composite material comprises (i) dissolving soluble divalent cobalt salt CoX and graphene oxide in aqueous solution A, (ii) mixing sodium borohydride, hydrazine hydrate and/or ascorbic acid graphene oxide to obtain aqueous solution B, (iii) entering inert gas phase to the micro-reactor, separating aqueous solutions A and B into inert liquids, and mixing and reacting aqueous solutions A and B to obtain precipitate, and (iv) washing the precipitate, centrifuging, and drying. USE - Used as continuously preparing highly dispersed nano-cobalt/reduced graphene oxide composite material. ADVANTAGE - The material has high dispersion of cobalt nano-particles and narrow particle size. DETAILED DESCRIPTION - Continuously preparing highly dispersed nano-cobalt/reduced graphene oxide composite material comprises (i) dissolving soluble divalent cobalt salt CoX and graphene oxide in aqueous solution A, where the X is chloride, nitrate, acetate and/or sulfate, the concentration of carbon dioxide in the aqueous solution A is 0.0001-0.1 mol/l, and the mass ratio of carbon dioxide to graphene oxide is 1:100-1:5, (ii) mixing sodium borohydride, hydrazine hydrate and/or ascorbic acid graphene oxide to obtain aqueous solution B, where the ratio of the total molarity of the sodium borohydride, hydrazine hydrate and/or ascorbic acid in aqueous solution B to the molar concentration of carbon dioxide in aqueous solution A is 2:1-50:1, (iii) entering the aqueous solutions A and B to a micro-reactor at the same flow rate from the two inlet channels, entering inert gas phase to the micro-reactor from the third inlet channel at a flow rate of 1-10 times the total flow rate of the aqueous solutions A and B, separating aqueous solutions A and B into inert liquids by the inert gas phase in the reactor internal reaction channel, contacting aqueous solutions A and B each other, mixing and reacting, and flowing the reaction out of the outlet channel of the reactor to obtain precipitate, (iv) washing the precipitate, centrifuging, and drying, where the reaction process comprises two liquid inlet one is the micro-reactor of gas inlet and the gas outlet.