Acid-Stable Oxides for Oxygen Electrocatalysis

Assessing materials’ stability under operating conditions is of critical importance to the development of device-oriented electrocatalysts, but few efforts have been devoted to this on a large scale. In this work, using the Materials Project data, we explore the aqueous stability of 47 814 nonbinary metal oxides under typical oxygen reduction/evolution reaction conditions and identify 68 likely acid-stable candidates for oxygen electrocatalysts. We also construct an “acid-stable periodic table” to guide the search for new acid-stable materials for electrocatalysis.