▎ 摘　　要

NOVELTY - Preparation of one-dimensional yolk-shell nickel-doped void-cobalt(II,III)oxide-reduced graphene oxide (RGO) wave absorbent involves synthesizing nickel nanowires using nickel chloride hexahydrate as a nickel source and hydrazine hydrate as a reductant by a chemical reduction method, coating the outer side of nickel nanowires with a phenolic resin of resorcinol-formaldehyde (RF) layer through in-situ polymerization of resorcinol and formaldehyde to obtain one-dimensional nickel-doped RF nanowires, growing cobalt hydroxide nanosheets at the surface of the nickel-doped RF nanowires by an oil bath reflux method, annealing the cobalt hydroxide nanosheets into cobalt(II,III)oxide nanosheets in the air, removing the coated phenolic resin RF through a reaction with the air to obtain nickel-doped void-cobalt(II,III)oxide nanowires in a yolk-shell structure containing a flower-like surface, uniformly mixing the nanowires with a graphene suspension, and hydrothermally reacting. USE - Preparation of one-dimensional yolk-shell nickel-doped void-cobalt(II,III)oxide-reduced graphene oxide wave absorbent used for absorbing electromagnetic waves, improving wireless communication quality, and improving communication quality between aircraft and base station (all claimed). ADVANTAGE - The method provides wave absorbent having superior performance and excellent properties, uses flower-like cobalt(II,III)oxide nanosheets and RGO nanosheets to support dielectric loss, provides one-dimensional cavities in the nanowires to adjust the impedance matching and reduce a density of the composite, and lengthens loss path by reflecting and diffracting microwaves several times in the cavities, thus improving the wave absorbing property. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: improving wireless communication quality using the prepared wave absorbent; and improving communication quality between aircraft and base station using the prepared wave absorbent. DESCRIPTION OF DRAWING(S) - The drawing shows a flowchart of preparation of the wave absorbent. S101One-dimensional nickel nanowire preparation process S102Nickel-doped RF nanowire preparation process S103Nickel-doped void-cobalt oxide nanowire preparation process S104Nickel-doped void-cobalt oxide-reduced graphene oxide composite preparation process