This research demonstrates enhanced oxygen evolution reaction activity in a novel iridium oxide catalyst, indicating improved stability for electrolysis.
Key Points
The study aims to improve the stability and activity of amorphous iridium oxide catalysts in water electrolysis.
Synthesis of mesoporous iridium oxide catalysts using surfactants.
Characterization of the hollandite-type local structure at atomic and mesoscale levels.
In situ spectroscopic techniques to analyze lattice oxygen behavior during the oxygen evolution reaction.
Achieved low cell voltage of 1.75 V at 2 A cm −2 in water electrolysis.
Demonstrated excellent stability for over 2000 hours at 2 A cm −2.
Highlighted a reversible cycle of lattice oxygen loss and reformation enhancing catalytic activity.