Magnetocrystalline Anisotropic Platinum-Palladium-Iron Ternary Intermetallic Alloy for Enhanced Fuel Cell Electrocatalysis.

ABSTRACT: Ordered Pt-based intermetallic alloys have emerged as promising candidates for oxygen reduction reaction (ORR) electrocatalysts in comparison to their disordered counterparts. Here, novel ferromagnetic PtPdFe ternary intermetallic alloys with structurally ordered tetragonal L1₀ and cubic L1₂ phases are presented, featuring distinctive characteristics in crystal structures and atomic alignments. Insights into the fundamental understanding of the Pt-based ternary intermetallic catalysts are provided, unveiling magnetocrystalline anisotropy as a structure-intrinsic descriptor for ORR catalysis. Electrochemical half- and single-cell assessments reveal that the L1₀-PtPdFe intermetallic catalysts exhibit superior ORR performance compared to their L1₂-t

SUBMITTER: Maulana MI 

PROVIDER: S-EPMC12531720 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature