▎ 摘　　要

NOVELTY - Graphene-nickel hydroxide-polymer composite microspheres with radial multi-stage pore structure comprises e.g. graphene, nickel hydroxide, and polymer, where the polymer includes sodium alginate, polyvinyl alcohol, polyethylene glycol, polyvinylpyrrolidone, and chitosan, the radial multistage pore structure of graphene-nickel hydroxide-polymer composite microspheres pores prepared by freeze-drying, specific surface area of 40-560 m2/g, the graphene-nickel hydroxide-polymer composite microspheres with radial multistage pore structure having nanopores of upto 2 nm. USE - The graphene-nickel hydroxide-polymer composite microspheres with radial multi-stage pore structure is useful for molecular adsorption, virus adsorption, and preparing electrode (all claimed). DETAILED DESCRIPTION - Graphene-nickel hydroxide-polymer composite microspheres with radial multi-stage pore structure comprises graphene, nickel hydroxide, and polymer, where the polymer includes sodium alginate, polyvinyl alcohol, polyethylene glycol, polyvinylpyrrolidone, and chitosan, the radial multistage pore structure of graphene-nickel hydroxide-polymer composite microspheres pores prepared by freeze-drying, having a diameter of 500 mu m to 2.4 mm, specific surface area of 40-560 m2/g, the graphene-nickel hydroxide-polymer composite microspheres with radial multistage pore structure having nanopores of upto 2 nm, and mesopores and radial micron-sized macropores is 2-50 nm. INDEPENDENT CLAIMS are also included for: (1) preparing graphene-nickel hydroxide-polymer composite microspheres with radial multi-stage pore structure comprising (i) uniformly dispersing graphene oxide in polymer solution, to obtain graphene oxide suspension, dropwise adding receiving liquid controlled by cryogenic freezing bath temperature, to obtain crystalline composite graphene microspheres, (ii) carrying out vacuum freeze-drying of step (ii) obtained crystalline composite graphene microspheres, to obtain graphene oxide-polymer composite microspheres, adding graphene oxide-polymer composite microspheres to nickel chloride solution, dropwise adding urea, uniformly mixing, transferring into blast oven, carrying out reaction by heating at 120-125 degrees C for 24 hours, cooling, filtering, washing, to obtain graphene oxide-nickel hydroxide-polymer composite microspheres, and (iii) adding step (ii) prepared graphene oxide-nickel hydroxide-polymer composite microspheres to crosslinking agent solution through liquid phase or vapor phase reductant reduction, filtering, cleaning, carrying out freeze drying, to obtain the final product; and (2) use of graphene-nickel hydroxide-polymer composite microspheres with radial multi-stage pore structure in preparing electrodes, where the preparation method includes placing graphene composite microspheres, acetylene black, teflon in an agate mortar in a mass ratio of 8:1:1, uniformly mixing, dropwise adding anhydrous ethanol, to obtain a slurry, tableting using a tableting machine, concentrating the slurry on foamed nickel current collector, drying at 120 degrees C, to obtain electrode.