High Oxygen Reduction Efficiency and Durability of Nano‐Honeycomb Pt3(NiFeCo) Replenished by High‐Entropy Metallic Glass Support

Developing low-Pt oxygen reduction reaction (ORR) catalysts with high efficiency and robustness is critical for practical fuel cells. The most advanced ORR catalysts either feature high percentages of Pt (>70 at.%) or exhibit poor durability when reducing Pt loading. Herein, a multicomponent solid-solution Pt