Atomic rearrangement from disordered to ordered Pd-Fe nanocatalysts with trace amount of Pt decoration for efficient electrocatalysis

The excellent ORR electrocatalytic performance on O-PdFe@Pt/C is originated from the interaction between high active O-PdFe/C core and ultralow content of Pt shell. This work provides new insights for the future optimization high efficiency ORR catalysts.382