▎ 摘　　要

NOVELTY - A nano manganese dioxide graphene composite foam electrode plate preparing method involves adding oxidized graphite and polypropylene to the ball mill. The ball milled mixture is added into mixed solution. The foamed nickel is immersed in suspension. The solvent is evaporated, and dried. The foamed nickel is put into muffle furnace and cooled. The product is immersed in hydrochloric acid, followed by adding nano manganese dioxide into toluene, ultrasonically forming a suspension, titrating the toluene suspension, drying, and putting into the muffle furnace and cooling to obtain final product. USE - Method for preparing a nano manganese dioxide graphene composite foam electrode plate. ADVANTAGE - The method enables preparing the nano manganese dioxide graphene composite foam electrode plate in cost effective manner. DETAILED DESCRIPTION - A nano manganese dioxide graphene composite foam electrode plate preparing method involves adding oxidized graphite and polypropylene to the ball mill to obtain mixture. The ball milled mixture is added into the mixed solution of ethanol and water to disperse into a suspension. The foamed nickel is immersed in the suspension, evaporated, and dried the solvent. The foamed nickel is put into the muffle furnace protected by the hydrogen nitrogen mixed gas and cooled to room temperature to obtain product. The product is immersed in hydrochloric acid and reacted to obtain graphene foam, followed by adding nano manganese dioxide into toluene, ultrasonically forming a suspension, titrating the toluene suspension containing manganese dioxide on the foamed graphene, drying, and putting into the muffle furnace for annealing, roller pressure after cooling to obtain the final product.