Cooperative Active Sites on Ag₂Pt₃TiS₆ for Enhanced Low-Temperature Ammonia Fuel Cell Electrocatalysis.

ABSTRACT: Ammonia has attracted considerable interest as a hydrogen carrier that can help decarbonize global energy networks. Key to realizing this is the development of low temperature ammonia fuel cells for the on-demand generation of electricity. However, the efficiency of such systems is significantly impaired by the sluggish ammonia oxidation reaction (AOR) and oxygen reduction reaction (ORR). Here, we report the design of a bifunctional Ag₂Pt₃TiS₆ electrocatalyst that facilitates both reactions at mass activities exceeding that of commercial Pt/C. Through comprehensive density functional theory calculations, we identify that active site motifs composed of Pt and Ti atoms work cooperatively to catalyze ORR and AOR. Notably, in situ shell-isolated nanoparticle-en

SUBMITTER: Wu T 

PROVIDER: S-EPMC11796334 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature