The Efect of Iron Impurities on Transition Metal Catalysts for the Oxygen Evolution Reaction in Alkaline Environment: Activity Mediators or Active Sites?
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Date
2021
Journal Title
Journal ISSN
Volume Title
Publisher
Catalysis Letters
Abstract
There is an ongoing debate on elucidating the actual role of Fe impurities in alkaline water electrolysis, acting either as reactivity mediators or as co-catalysts through synergistic interaction with the main catalyst material. This perspective summarizes the most prominent oxygen evolution reaction (OER) mechanisms mostly for Ni-based oxides as model transition metal catalysts and highlights the effect of Fe incorporation on the catalyst surface in the form of impurities originating from the electrolyte or co-precipitated in the catalyst lattice, in modulating the OER reaction kinetics, mechanism and stability.
Description
Keywords
Alkaline water electrolysis · Electrocatalysis · Fe impurities · Reaction mechanism
Citation
Spanos, I., Masa, J., Zeradjanin, A., & Schlögl, R. (2021). The effect of iron impurities on transition metal catalysts for the oxygen evolution reaction in alkaline environment: activity mediators or active sites?. Catalysis Letters, 151(7), 1843-1856.https://doi.org/10.1007/s10562-020-03478-4