▎ 摘　　要

NOVELTY - Method for preparing multi-stage nanosheet array nickel cobaltite/reduced graphene oxide/nickel foam comprises dissolving cobalt nitrate hexahydrate in deionized water to form a mixed salt solution, dripping a mixture salt solution and an alkali solution at a speed of 0.8-1.5 ml/minute to make a pH of the solution stable at 10-0.1, controlling pH of solution in a four-necked flask to be 0.1 and stabilizing for 6-9 minutes, mixing nickel nitrate and cobalt sulfate in deionized water to dissolve cobalt sulfate hexahydrate to obtain a mixed solution, transferring obtained slurry containing reduced graphene oxide/nickel foam to a Teflon(Polytetrafluoroethylene) reaction kettle, crystallizing at 85-95℃ for 5-7 hours, cooling, and washing obtained product with deionized water. USE - The method is useful for preparing multi-stage nanosheet array nickel cobaltite/reduced graphene oxide/nickel foam, which is useful as electrode of methanol fuel cell and super capacitor (claimed). ADVANTAGE - The method enables to prepare multi-stage nanosheet array nickel cobaltite/reduced graphene oxide/nickel foam, which has high conductivity graphene composite, and increases the active site exposure, which is more beneficial for electron or particle transmission. The nano-sheet has a porous structure, forming a large amount of open channel between the interconnected nano-sheets, and is beneficial for electrolyte ion penetration. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for multi-stage nanosheet array nickel cobaltite/reduced graphene oxide/nickel foam.