Fabrication of Coral‐Shaped MoS2@Ni(Mn)VOX Electrocatalyst for Efficient Alkaline Hydrogen Evolution

Electrochemical hydrogen production is considered as one of the most significant ways to develop clean energy in the future. Herein, the self‐supporting electrocatalyst of MoS 2 @Ni(Mn)VO X is fabricated on 3D nickel foam (NF) by a facile two‐step electrodeposition approach. The optimal MoS 2 @Ni(Mn)VO X electrode shows an ultralow overpotential of 61 mV to achieve a current density of 10 mA cm −2 and a Tafel slope of 35.1 mV dec −1 in 1 m KOH, which is superior to NF, MoS 2 @NF, NiVO X , Ni(Mn)VO X , or MoS 2 @NiVO X . The uniformly dispersed coral‐shaped heterostructure exposes more active sites and makes the charge transfer rate faster. The outstanding synergistic effect of MoS 2 and transition metal oxides of Ni, Mn, and V also contribute to the enhanced activity of the catalyst. Benefiting from these, MoS 2 @Ni(Mn)VO X shows superior alkaline hydrogen evolution reaction activity and long‐term stability. Herein, a novel catalyst for highly efficient hydrogen evolution in alkaline media is provided.