Interface Engineering-Induced 1T-MoS2/NiS Heterostructure for Efficient Hydrogen Evolution Reaction

Metal phase molybdenum disulfide (1T-MoS2) is considered a promising electrocatalyst for the hydrogen evolution reaction (HER). In this work, an interface engineering-induced strategy reported to prepare 1T-MoS2/NiS heterostructure. The heterostructure exhibits enhanced HER activity compared with that of 1T-MoS2 in 1.0 M KOH. It achieves overpotential 0.12 V at current density 10 mA cm−2 Tafel slope 69 mV dec−1. functional theory (DFT) calculations reveal regulated electronic states S sites 1T-MoS2, thus promoting activity. This work demonstrates tuning structure through engineering enhance intrinsic electrocatalysts feasible strategy.