Hierarchical Ni-doped Fe 7 S 8 /MoS 2 heterostructures: enhanced oxygen evolution reaction via electronic redistribution and structural reconstruction

We have developed Ni-Fe 7 S 8 /MoS 2 hierarchical heterostructures on iron foam via one-step in situ sulfidation. The catalyst exhibits excellent OER performance due to its unique morphology, modulated electronic structure, and partial reconstruction.