Exsolved Fe–Ni nano-particles from Sr2Fe1.3Ni0.2Mo0.5O6 perovskite oxide as a cathode for solid oxide steam electrolysis cells

A stable and catalytically active cathode consisting of homogeneously dispersed nano-socketed Fe–Ni particles has been elegantly fabricated in single-step treatment for solid oxide steam electrolysis cells via the in situ reduction of the Sr₂Fe_1.3Ni_0.2Mo_0.5O₆ (SFMNi) material in a humidified H₂ (3 vol% H₂O) atmosphere at 800 °C.