▎ 摘　　要

NOVELTY - Preparing electrode material using foam nickel as substrate to construct core-shell structure comprises (i) using hydrogen chloride solution to perform ultrasonic treatment of foam nickel electrode sheet, washing foam nickel with ion water and sewage ethanol, drying, (ii) adding graphene oxide slurry into ultrasonic deionized water to prepare graphene oxide dispersion liquid, (iii) dissolving copper nitrate in deionizing water, adding processed foam nickel, and ultrasonically stirring, (iv) adding graphene oxide dispersion liquid into the solution, (v) heating solution by water bath, and (vi) dissolving nickel chloride hexahydrate and thiourea in deionization water, and preparing into reaction solution, (vii) using reaction solution configured as electrolyte, and circularly depositing nickel subsulfide by cyclic voltammetry to prepare electrode sample of composite material. USE - The method is useful in super capacitor as electric energy storage device. ADVANTAGE - The electrode material has high specific surface area and high specific capacity on the foam nickel by hydrothermal method, can prevent graphene agglomeration, forms multi-layer graphene has excellent mechanical stability, has higher conductivity, the theoretical specific capacity is high, the electro negativity of the sulfur atom is lower and exhibits better conductivity and reaction activity. DETAILED DESCRIPTION - Preparing electrode material using foam nickel as substrate to construct core-shell structure comprises (i) using hydrogen chloride solution to perform ultrasonic treatment of foam nickel electrode sheet, washing foam nickel with ion water and sewage ethanol, drying, (ii) adding graphene oxide slurry into ultrasonic deionized water to prepare graphene oxide dispersion liquid, (iii) dissolving copper nitrate in deionizing water, adding processed foam nickel, and ultrasonically stirring, (iv) adding graphene oxide dispersion liquid into the solution, stirring and dropping aqueous ammonia, (v) heating solution by water bath, removing foam nickel sheet after cooling, and drying, and (vi) dissolving nickel chloride hexahydrate and thiourea in deionization water, and preparing into reaction solution, (vii) using reaction solution configured as electrolyte, preparing copper oxide-graphene oxide-foam nickel as working electrode, platinum electrode as counter electrode, saturated mercury/mercuric oxide as reference electrode, and circularly depositing nickel subsulfide by cyclic voltammetry to prepare electrode sample of composite material. INDEPENDENT CLAIMS are also included for: electrode material using foam nickel as substrate to construct core-shell structure; and electrode material with core-shell structure constructed by using foam nickel as substrate, comprising nickel foam, graphene oxide paste, copper nitrate, nickel chloride hexahydrate and thiourea.