Herein, a stable and efficient CoS₂-ReS₂ electrocatalyst is successfully constructed by using the different molar ratios of CoS₂ on ReS₂. The size and morphology of the catalysts are significantly changed after the CoS₂ is grown on ReS₂, providing regulation of the catalytic activity of ReS₂. Particularly, the optimized CoS₂-ReS₂ shows superior electrocatalytic properties with a low voltage of 1.48 V at 20 mA cm⁻² for overall water splitting in 1.0 M KOH, which is smaller than the noble metal-based catalysts (1.77 V at 20 mA cm⁻²). The XPS, XAS, and theoretical data confirm that the interfacial regulation of ReS₂ by CoS₂ can provide rich edge catalytic sites, which greatly optimizes the catalytic kinetics and drop the energy barrier for oxygen/hydrogen evolution reactions. Our results demonstrated that interfacial engineering is an efficient route for fabricating high-performance water splitting electrocatalysts.

在此，通过使用不同摩尔比的CoS ₂与ReS ₂成功构建了稳定高效的CoS ₂ -ReS ₂电催化剂。_{CoS 2在ReS 2}上生长后，催化剂的尺寸和形态发生显着变化，从而调节ReS ₂的催化活性。特别是，优化的CoS ₂ -ReS ₂显示出优异的电催化性能，在1.0 M KOH中整体水分解电压为1.48 V（20 mA cm ^{-2 ）}，比贵金属基催化剂（20 mA cm ^{-2为1.77 V）小。}）。XPS、XAS和理论数据证实，CoS _{2对ReS 2}的界面调控可以提供丰富的边缘催化位点，从而极大地优化催化动力学并降低析氧/析氢反应的能垒。我们的结果表明，界面工程是制造高性能水分解电催化剂的有效途径。