A cobalt-doped WS2/WO3 nanocomposite electrocatalyst for the hydrogen evolution reaction in acidic and alkaline media

The development of earth-abundant and green electrocatalysts is an important research field, aiming to provide energy solutions by clean and efficient hydrogen evolution (HER). 2D transition metal dichalcogenides (TMDs) are well-known HER catalysts, and some are even biocompatible and environmentall...

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Bibliographic Details
Published in:New journal of chemistry 2022-10, Vol.46 (42), p.20102-20107
Main Authors: Kadam, Sunil R, Bar-Ziv, Ronen, Bar-Sadan, Maya
Format: Article
Language:English
Subjects:
Biocompatibility
Catalysts
Chemical synthesis
Clean energy
Composite structures
Electrocatalysts
Hydrogen evolution reactions
Iron
Nanocomposites
Transition metal compounds
Tungsten disulfide
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Summary:The development of earth-abundant and green electrocatalysts is an important research field, aiming to provide energy solutions by clean and efficient hydrogen evolution (HER). 2D transition metal dichalcogenides (TMDs) are well-known HER catalysts, and some are even biocompatible and environmentally friendly, such as WS2. Synthesizing them in a flower-like morphology that provides abundant edges, and the formation of composite structures that offer multiple interfaces, render them with promising features for electrocatalysis. Here we show the synthesis of WS2/WO3 hybrid catalysts, which facilitate the hydrogen evolution reaction. The mixture of 1T/2H-WS2 phases and doping with various transition metals (Fe, Co, and Ni) improves the pristine structures. The 5% Co-WS2/WO3 composite is the most promising HER electrocatalyst among the doped catalysts studied here. These Co-doped WS2/WO3 composites represent another TMD alternative to the precious metal electrocatalysts for the HER.
ISSN:1144-0546
1369-9261
DOI:10.1039/d2nj02687b