Preparation method of foamed nickel electrode modified with hydrophilic monodisperse magnetic NiFe@NiFeO nanoparticles

The invention provides a preparation method of a foamed nickel electrode modified with hydrophilic monodisperse magnetic NiFe@NiFeO nanoparticles. Reduction nucleation mode is adopted; preparation ofmonodisperse magnetic NiFe@NiFeO with the particle size of 4-5nm is realized, then the monodisperse magnetic NiFe@NiFeO is uniformly coated on foamed nickel, and in anaqueous solution, the monodisperse magnetic nanoparticles and the magnetic foamed nickel are magnetically interacted, so that no extra adhesive is needed in loading on foamed nickel. The catalyst hasexcellent electrocatalytic oxygen evolution activity under an alkaline condition; the current density of 10mA*cm can be achieved only at the overpotential of 215 mV under the 1M KOH alkaline condition, the electrocatalytic activity under the large current has more advantageous, and the current density of 100 mA*cm can be achieved at the overpotential of 260 mV. The method is simple, can avoid the defect that the powder catalyst