Interfacial Engineering-Induced Electronic State Modulation in Ru/MoS2 Heterostructures for Efficient Hydrogen Evolution Reaction

In traditional binary heterojunction catalysts, mismatched energy band structures lead to higher electron transfer barriers. By reducing the work function difference via a ternary Ru-RuS2/MoS2 heterostructure, we developed a HER catalyst with remarkable activity (17 mV@10 mA cm-2) and excellent stability (300 h@500 mA cm-2).