▎ 摘　　要

NOVELTY - A silica precursor, alumina precursor, titania precursor and graphene material are evenly mixed with alcohol solution at room temperature. Weak base solution is slowly added to mixture and stirred for 1-3 hours. Silica precursor, alumina precursor and titania precursor are grown on graphene materials, respectively, to obtain graphene/silica/alumina/titania composite filler. The graphene/silica/alumina/titania composite filler comprises 0.1-30 wt.% silica, 0.1-30 wt.% alumina, 0.1-30 wt.% titania and 0.1-35 wt.% graphene material. USE - Preparation of graphene/silica/alumina/titania composite filler used in thermal conductivity application and preparation of graphene-containing composite electroconductive heat-dissipating material (all claimed), graphene electrode, graphene composite material, graphene coating and graphene fiber composite material. ADVANTAGE - The method enables preparation of graphene/silica/alumina/titania composite filler with excellent stability by simple method. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for the following: (1) usage of graphene/silica/alumina/titania composite filler in thermal conductivity; and (2) preparation of composite electroconductive heat-dissipating material containing graphene, which involves mixing 1-85 wt.% graphene/silica/alumina/titania composite filler, 190 wt.% main film-forming material and 1-35 wt.% additive filler. The additive filler comprises magnesium oxide, boron oxide, niobium oxide, diatom mud, nickel oxide, iron oxide, carbon black, carbon nanotubes, aluminum nitride, activated carbon, boron nitride, titanium oxide and/or zinc oxide.