The Ir–OOOO–Ir transition state and the mechanism of the oxygen evolution reaction on IrO <sub>2</sub> (110)
Tobias Binninger, Marie‐Liesse Doublet
Abstract
under OER conditions. The establishment of surface oxygen atoms as fixed electrocatalytically active sites on a transition-metal oxide represents a paradigm shift for the understanding of water oxidation electrocatalysis, and it reconciles the theoretical understanding of the OER mechanism on iridium oxide with recently reported experimental results from operando X-ray spectroscopy. The novel mechanism provides an efficient OER pathway on a weakly reducible oxide, defining a new strategy towards the design of advanced OER catalysts with combined activity and stability.
Topics & Concepts
IridiumOxygen evolutionChemistryElectrocatalystCatalysisOxideOxygenTransition metalMoleculePhotochemistryChemical physicsPhysical chemistryElectrochemistryBiochemistryElectrodeOrganic chemistryElectrocatalysts for Energy ConversionCatalytic Processes in Materials ScienceAdvanced Photocatalysis Techniques