Cobalt-doped hematite thin films for electrocatalytic water oxidation in highly acidic media. Design of template-stabilized active and Earth-abundant oxygen evolution catalysts in acid. Enhanced activity and acid pH stability of Prussian blue-type oxygen evolution electrocatalysts processed by chemical etching. Crystalline cobalt oxide films for sustained electrocatalytic oxygen evolution under strongly acidic conditions. Nanostructured cobalt oxide clusters in mesoporous silica as efficient oxygen-evolving catalysts. Polyoxometalate electrocatalysts based on Earth-abundant metals for efficient water oxidation in acidic media. Universality in oxygen evolution electrocatalysis on oxide surfaces. PGM Market Report May 2020 (Johnson Matthey, 2020) Addressing the terawatt challenge: scalability in the supply of chemical elements for renewable energy. A highly active and stable IrO x/SrIrO 3 catalyst for the oxygen evolution reaction. In situ formation of an oxygen-evolving catalyst in neutral water containing phosphate and Co 2+. Performance of a PEM water electrolysis cell using Ir xRu yTa zO 2 electrocatalysts for the oxygen evolution electrode. NSTF advances for PEM electrolysis–the effect of alloying on activity of NSTF electrolyzer catalysts and performance of NSTF based PEM electrolyzers. Considerations for the scaling-up of water splitting catalysts. Future global energy prosperity: the terawatt challenge. As the lifetimes of other 3 d metal oxygen evolution catalysts are in the order of days and weeks, despite current densities being lower by an order of magnitude, our results are an important step towards the realization of noble-metal-free water electrolysers. The calculations also show that the thermodynamic landscape of Co 2MnO 4 suppresses dissolution, which results in a lifetime of over 2 months (1,500 hours) at 200 mA cm −2 geo at pH 1. The activation barrier of the obtained spinel Co 2MnO 4 is comparable to that of state-of-the-art iridium oxides, most probably due to the ideal binding energies of the oxygen evolution reaction intermediates, as shown using density functional theory calculations. Here we report that incorporating Mn into the spinel lattice of Co 3O 4 can extend the catalyst lifetime in acid by two orders of magnitude while maintaining the activity. Active and stable electrocatalysts for the oxygen evolution reaction are required to produce hydrogen from water using renewable electricity.
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