Orbital electron delocalization of axial-coordinated modified FeN₄ and structurally ordered PtFe intermetallic synergistically for efficient oxygen reduction reaction catalysis.

ABSTRACT: Regulating the chemical environment of materials to optimize their electronic structure, leading to the optimal adsorption energies of intermediates, is of paramount importance to improving the performance of electrocatalysts, yet remains an immense challenge. Herein, we design a harmonious axial-coordination Pt _x Fe/FeN₄CCl catalyst that integrates a structurally ordered PtFe intermetallic with an orbital electron-delocalization FeN₄CCl support for synergistically efficient oxygen reduction catalysis. The obtained Pt₂Fe/FeN₄CCl with a favorable atomic arrangement and surface composition exhibits enhanced oxygen reduction reaction (ORR) intrinsic activity and durability, achieving a mass activity (MA) and specific activity (SA)

SUBMITTER: Wu C 

PROVIDER: S-EPMC11322963 | biostudies-literature | 2024 Aug

REPOSITORIES: biostudies-literature