OXYGEN EVOLUTION CATALYST, PRODUCTION AND USE THEREOF, MEMBRANE ELECTRODE ASSEMBLY, AND FUEL CELL OR ELECTROLYSIS CELL
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United States of America Patent
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Jan 11, 2024
app pub date -
Oct 7, 2021
filing date -
Oct 13, 2020
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Abstract
An oxygen evolution reaction catalyst includes a solid solution of at least one valve metal oxide and at least one noble metal oxide, wherein the valve metal oxide is selected from oxides of titanium, oxides of niobium, oxides of tungsten and oxides of tantalum, the noble metal oxide is selected from oxides of iridium, oxides of ruthenium and/or mixtures and/or alloys thereof, the BET specific surface area of the solid solution is greater than 10 m2/g, and the oxygen evolution reaction catalyst exhibits a weight loss of less than 2% by weight upon exposure of the oxygen evolution reaction catalyst to a 3.3 vol % hydrogen stream in argon at a temperature of 80° C. for 12 hours.
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