Coupling CoIr Nanoalloys with MXene by Lewis Acidic Molten Salt Etching for Wide‐pH‐Environment Hydrogen Evolution Reaction

) at the potential of 50 mV, indicating larger active site density and intrinsic activity for CoIr/MXene. This work expands the application of the molten salt assist etching strategy and provides new insight for the development of metal/MXene-based catalysts.