Direct Oxygen‐Oxygen Cleavage through Optimizing Interatomic Distances in Dual Single‐atom Electrocatalysts for Efficient Oxygen Reduction Reaction

The oxygen reduction reaction (ORR) on transition single-atom catalysts (SACs) is sustainable in energy-conversion devices. However, the atomically controllable fabrication of sites and sluggish kinetics ORR have remained challenging. Here, we accelerate acid through a direct O−O cleavage pathway using bi-functional ligand-assisted strategy to pre-control distance hetero-metal atoms. Concretely, as-synthesized Fe−Zn diatomic pairs carbon substrates exhibited an outstanding performance with ultrahigh half-wave potential 0.86 V vs. RHE electrolyte. Experimental evidence density functional theory calculations confirmed that specific range around 3 Å, which key their activity, average interaction between hetero-diatomic active molecules. This work offers new insight into SACs synthesis addresses limitations dissociative mechanism.