Iron-cobalt-nickel nano material, water electrolysis hydrogen production device and preparation method and application of iron-cobalt-nickel nano material

The invention relates to an iron-cobalt-nickel nano material, a water electrolysis hydrogen production device and a preparation method and application of the iron-cobalt-nickel nano material. The preparation method of the iron-cobalt-nickel nano material comprises the following steps: S1, dissolving an iron source, a cobalt source and a nickel source in a solvent to obtain a precursor solution; and S2, foamed nickel is soaked in the precursor solution, electrochemical deposition is conducted on the foamed nickel, and the iron-cobalt-nickel nano material is obtained. As an electrode material, the iron-cobalt-nickel nano material can be subjected to hydrogen evolution, oxygen evolution and full hydrolysis reaction in an alkaline environment, and also has good hydrogen evolution performance in a neutral solution. The iron-cobalt-nickel nano material can be suitable for a bipolar membrane-based water electrolysis device with relatively large electrolyte pH value and conductivity change, and ...