Transition metal dichalcogenides (TMDs) are promising electrocatalysts for the hydrogen evolution reaction (HER). Several approaches have been adopted to increase the density of the catalytically active edge-sites of TMDs including the use of high surface area 3D templates. In this work, we report the implementation of a high surface area WS₂ framework grown using plasma-enhanced atomic layer deposition (PEALD) as templates to support edge-enriched PEALD grown WS₂ electrocatalyst films. We show that these combined WS₂ template-electrocatalyst configurations show better HER performance than the individual constituents. Material properties of the combined configurations including morphology and composition are investigated. A correlation between material properties and the HER performance is observed. This facile pathway could lead to a new route for creating high surface area electrocatalyst systems via PEALD.

中文翻译：

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通过原子层沉积法在高表面积WS2框架上合成边缘富集的WS2以进行电催化放氢反应

过渡金属二卤化物（TMDs）是用于氢释放反应（HER）的有前途的电催化剂。已经采用了几种方法来增加TMD的催化活性边缘位点的密度，包括使用高表面积3D模板。在这项工作中，我们报告了使用等离子增强原子层沉积（PEALD）作为模板来支持边缘富集的PEALD生长WS ₂电催化剂膜的高表面积WS ₂框架的实现。我们证明了这些组合的WS ₂模板电催化剂配置显示出比单个成分更好的HER性能。研究了组合构型的材料特性，包括形态和组成。观察到材料性质和HER性能之间的相关性。这种简便的途径可能会导致通过PEALD创建高表面积电催化剂系统的新途径。