Construction of electrocatalysts with exceptional intrinsic activity and rich active sites has proved to be an effective strategy for remarkably enhancing the activity of the hydrogen evolution reaction (HER). In this work, durable and highly efficient layered ReP/ReS (RePS) heterostructures were successfully fabricated by an in-situ phosphating layered ReS. Taking advantage of the unique layered structure can provide abundant reaction active sites and the strong electronic interaction between ReS and ReP can enhance the intrinsic activity, the optimized RePS electrocatalysts show superior catalytic activities of 69 and 57 mV at 10 mA cm for HER in alkaline and acidic media, respectively. The density functional theory results suggest that the formed heterostructures between ReS and ReP play an important role in optimizing the catalytic kinetics of the electrocatalysts. This work not only demonstrates that modulation of the electronic structure of catalysts is an efficient way to improve the HER activity but also confirms that the layered RePS heterostructure is a promising candidate for robust and high performance HER catalysts.

中文翻译：

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原位构建层状过渡金属磷化物/硫化物异质结构，以在酸性和碱性介质中有效析氢

事实证明，构建具有优异本征活性和丰富活性位点的电催化剂是显着提高析氢反应（HER）活性的有效策略。在这项工作中，通过原位磷化层状 ReS 成功制备了耐用且高效的层状 ReP/ReS (RePS) 异质结构。利用独特的层状结构可以提供丰富的反应活性位点以及ReS和ReP之间的强电子相互作用可以增强本征活性，优化后的RePS电催化剂在碱性和碱性条件下对HER表现出优异的催化活性，在10 mA cm下分别为69和57 mV。分别为酸性介质。密度泛函理论结果表明ReS和ReP之间形成的异质结构在优化电催化剂的催化动力学中发挥着重要作用。这项工作不仅证明了催化剂电子结构的调节是提高 HER 活性的有效方法，而且还证实了层状 RePS 异质结构是稳健、高性能 HER 催化剂的有希望的候选者。