Synthesis of edge-enriched WS2on high surface area WS2framework by atomic layer deposition for electrocatalytic hydrogen evolution reaction

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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.

Original languageEnglish
Article number062201
Number of pages8
JournalJournal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Issue number6
Publication statusPublished - 1 Dec 2020

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