1. It is found that the activity and stability of electrocatalytic oxygen evolution can be greatly improved by adjusting the microstructure and electronic structure of the oxygen evolution catalyst with low activity but friendly preparation process, thus expanding the electrolytic water catalyst.
2. It is necessary to use electrocatalyst to reduce the overpotential of OER, and self-supporting nickel-iron layered double hydroxide was prepared on foamed iron by corrosion method.