Lattice‐Oxidation‐Driven Efficient OER in FeOOH/NiFeOx Heterointerface Electrocatalyst via Laser‐Corrosion Engineering

, along with excellent long-term durability. Mechanistic studies, including in situ spectroscopy and chemical probing, revealed that the exceptional OER performance is governed by a lattice oxidation mechanism. This work provides a viable and scalable pathway for the rational design of high-performance and economically feasible Ni-Fe-based electrocatalysts for industrial alkaline water splitting.