Herein, we demonstrate the synthesis of molybdenum disulphoselenide (MoS_2(1−x)Se_2x) and tungsten disulphoselenide (WS_2(1−x)Se_2x) alloys onto FTO substrates, to obtain a higher hydrogen evolution reaction (HER) activity compared to pristine MoS₂ and WS₂. By incorporating selenium (Se) into MoS₂ and WS₂ matrices, an excellent HER catalytic activity was ensured in an acidic electrolyte with overpotentials of 141 mV and 167 mV @ 10 mA cm⁻² with Tafel slopes of 67 and 107 mV per decade for MoS_2(1−x)Se_2x and WS_2(1−x)Se_2x, respectively. Moreover, MoS_2(1−x)Se_2x and WS_2(1−x)Se_2x alloys showed robust durability over 20 h of continuous HER operation in acidic solutions. Our investigation provides the synthesis of tunable metal dichalcogenide hybrid structures with better electrochemical performance.

中文翻译：

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MoS _{2（1- x）} Se _{2 x}和WS _{2（1- x）} Se _{2 x}合金的合成以增强析氢反应性能

在本文中，我们演示了在FTO衬底上合成二硫化钼（MoS _{2（1- x）} Se _{2 x}）和二硫化钨（WS _{2（1- x）} Se _{2 x}）合金的方法，以获得更高的析氢反应（HER ）活性与原始MoS ₂和WS _2相比。通过将硒（Se）掺入MoS ₂和WS ₂基质中，可确保在过电位为141 mV和167 mV @ 10 mA cm ^-2的酸性电解质中具有出色的HER催化活性，其中Tafel斜率每十年为67和107 mV MoS _{2（1- x）} Se _{2 x}和WS _{2（1- x）} Se _{2 x}。此外，MoS _{2（1- x）} Se _{2 x}和WS _{2（1- x）} Se _{2 x}合金在酸性溶液中连续HER运行20小时后显示出强大的耐久性。我们的研究提供了具有更好的电化学性能的可调谐金属二卤化杂化物杂化结构的合成。