Tailoring Bimetallic Catalysts for Efficient Two‐Electron Oxygen Reduction to H ₂ O ₂

The two‐electron oxygen reduction reaction (2e ⁻ ORR) enables a decentralized and sustainable route for on‐site H ₂ O ₂ production. This strategy brings prominent advantages in safety, cost, and environmental friendliness by removing the requirement for energy‐intensive transport and storage of concentrated H ₂ O ₂ . This review summarizes the most recent advancements in bimetallic electrocatalysts toward 2e ⁻ ORR, emphasizing the key role of bimetallic synergistic effects. We start with an introduction of the reaction mechanism of 2e ⁻ ORR. Then, we focus on the design strategies of bimetallic catalysts, including electronic structure and the coordination environment regulation, strain engineering, heterostructure engineering, and vacancy engineering. The underlying catalytic mechanisms are described to theoretically guide the rational design of advanced electrocatalysts. Subsequently, representative bimetallic atomic catalysts and nanoparticles catalysts are systematically classified and discussed. Finally, we discuss the challenges and prospects for H ₂ O ₂ production via the 2e ⁻ ORR.