▎ 摘　　要

NOVELTY - A nano nickel sulfide-graphene composite electrode material is prepared by putting conductive base material in graphene oxide solution, taking out, drying, taking graphene oxide/conducting base material as working electrode and salt solution of nickel element as electrolyte, adopting constant potential deposition, depositing nano nickel hydroxide on graphene oxide/conductive carbon surface, reducing graphene oxide salt to obtain nickel hydroxide-graphene composite material, reacting with sodium sulfide. USE - Nano nickel sulfide-graphene composite electrode material used for electrochemical energy storage and electrochemical sensor field.