In situ oxidation transformation of trimetallic selenide to amorphous FeCo-oxyhydroxide by self-sacrificing MoSe2 for efficient water oxidation

A MoSe₂-containing trimetallic selenide is synthesized and in situ converted to an amorphous FeCo-oxyhydroxide during the oxygen evolution reaction, while MoSe₂ is self-sacrificially dissolved, leaving considerable space to increase a high exposure of FeCo-oxyhydroxide species to the electrolyte.