Enabling Efficient Oxygen Reduction Reaction with Pt Single Atoms on Carbide: A Phosphorus-Doped Mo₂C Interface Strategy.

ABSTRACT: Developing efficient and cost-effective oxygen reduction reaction (ORR) catalysts is a critical process in electrochemical energy conversion technologies. Here, we report a new heterostructured electrocatalyst composed of phosphorus-doped Mo₂C coupled with atomically dispersed Pt sites (Pt/P-Mo₂C). This is realized through a confined polymerization approach using heteropolyacid-pyrrole complexes and subsequent covalent anchoring. Phosphorus doping plays a crucial role in enhancing the interfacial electron density and enabling strong electronic interactions with Pt atoms. The results showed that the interfacial electronic structure of Pt is significantly modulated, with a downshifted d-band center that optimizes the adsorption/desorption energetics of ORR intermediates

SUBMITTER: Shi C 

PROVIDER: S-EPMC12616767 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature