| abstract |
The invention provides a cobalt-nickel alloy/reduced graphene oxide nanocomposite material for high-frequency electromagnetic wave shielding, a preparation method and application thereof. In the present invention, soluble cobalt salt, soluble nickel salt, additives and graphene oxide aqueous dispersion are used as raw materials, and hydrogel is prepared by hydrothermal reaction; Then, the dry gel-like precursor is obtained by drying; and finally, the cobalt-nickel alloy/reduced graphene oxide nanocomposite is obtained by calcining under the protection of an inert atmosphere. The preparation method of the invention has the advantages of reasonable design, simple process, low cost and easy realization; the cobalt-nickel alloy nanoparticles in the obtained composite material have uniform particle size and are evenly distributed on the surface of graphene, and have good dispersibility; the obtained composite material also has excellent electromagnetic properties. shielding performance. |