Mechanistic Insights into the Enhanced Ammonia Oxidation Activity of PtRh Electrodeposits

Ammonia has garnered significant attention as a promising hydrogen carrier due to its high volumetric energy density, milder storage conditions, and relatively mature infrastructure. The electrochemical ammonia oxidation reaction (AOR) can facilitate the release of hydrogen from ammonia at the point of use, enabling on-demand hydrogen production without the need for high pressure storage. However, current AOR catalysts exhibit high overpotentials and sluggish kinetics, and they are susceptible to poisoning by AOR byproducts. We report the AOR activity of electrodeposited bimetallic PtRh alloy nanostructured catalysts. The dilute Pt