A Phosphate Tolerant Pt-based Oxygen Reduction Catalyst Enabled by Synergistic Modulation of Alloying and Surface Modification.

Addressing phosphoric acid poisoning of platinum-based catalysts in high-temperature fuel cells still remains a strategic and synthetic problem. Here, we synthesized a Pt3Co@MoOx-NC catalyst with a Pt3Co active core and MoOx modification on the surface, which simultaneously exhibits high ORR activity and phosphate tolerance.