Metal-Support Interaction between Titanium Oxynitride and Pt Nanoparticles Enables Efficient Low-Pt-Loaded High-Performance Electrodes at Relevant Oxygen Reduction Reaction Current Densities.

ABSTRACT: In the present work, we report on a synergistic relationship between platinum nanoparticles and a titanium oxynitride support (TiO_xN_y/C) in the context of oxygen reduction reaction (ORR) catalysis. As demonstrated herein, this composite configuration results in significantly improved electrocatalytic activity toward the ORR relative to platinum dispersed on carbon support (Pt/C) at high overpotentials. Specifically, the ORR performance was assessed under an elevated mass transport regime using the modified floating electrode configuration, which enabled us to pursue the reaction closer to PEMFC-relevant current densities. A comprehensive investigation attributes the ORR performance increase to a strong interaction between platinum and the TiO_x

SUBMITTER: Hrnjic A 

PROVIDER: S-EPMC10877567 | biostudies-literature | 2024 Feb

REPOSITORIES: biostudies-literature