Exploring the Intrinsic Effects of Lattice Strain on the Hydrogen Evolution Reaction via Electric-Field-Induced Strain in FePt Films

Strain engineering has the potential to modify the adsorption process and enhance the electrocatalytic activity, especially in the hydrogen evolution reaction (HER). However, the introduction of lattice strain in electrocatalysts is often accompanied by a change in chemical composition, surface morphology, or phase structure to a certain extent, impeding the investigation of the intrinsic strain effect on HER. In this work, the FePt film was deposited on a Pb(Mg