▎ 摘　　要

NOVELTY - A graphene-cobalt-aluminum-layered double hydroxide composite electrode material preparation method involves preparing graphene oxide aerogels by mixing graphene oxide with deionized water and freeze-drying, mixing cobalt salt and deionized water to obtain cobalt salt solution, mixing aluminum salt with deionized water to obtain aluminum salt solution, mixing the cobalt salt solution with the aluminum salt solution, adding urea, ammonium fluoride and cetyltrimethylammonium bromide, stirring and mixing to obtain cobalt-aluminum mixed solution, hydrothermally reacting the graphene oxide aerogel and cobalt-aluminum mixed solution, lowering temperature to room temperature, utilizing deionized water for replacement and freeze-drying to obtain graphene-cobalt-aluminum-layered double hydroxide composite electrode material, where the graphene oxide aerogels are prepared by performing improved Hummers method. USE - Method for preparing graphene-cobalt-aluminum-layered double hydroxide composite electrode material. ADVANTAGE - The method enables preparing graphene-cobalt-aluminum-layered double hydroxide composite electrode material in a simple and environmentally-friendly manner at low cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a graphene-cobalt-aluminum-layered double hydroxide composite electrode material prepared by the method.