Enhanced Activity Promoted by Metal Support Interaction of Pt/TiC Electrocatalyst for Ammonia Oxidation Reaction

Abstract The efficiency of electrocatalysis for ammonia oxidation reaction (AOR) using platinum catalysts is hindered primarily by slow kinetic rates, attributed to the robust adsorption of nitrogen (*N) and oxygen (*OH) intermediates. To overcome these challenges, a strategy involving the subtle weakening of the adsorption strength of either *N products or *OH intermediates is essential for enhancing the AOR activity. Herein, the enhanced catalytic performance of Pt/TiC electrocatalysts in the AOR is explored. Through the X‐ray photoelectron spectroscopy (XPS), it is confirmed that local charge transfer and d ‐band shifts, induced by the interaction between Pt and TiC, weaken the adsorption strength of *N and *OH adsorbates, leading to a 1.5‐fold increase in AOR activity of optimized Pt/TiC compared to pristine Pt.