Issue 42, 2022

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

Abstract

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.

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

Supplementary files

Article information

Article type
Paper
Submitted
30 May 2022
Accepted
06 Sep 2022
First published
06 Sep 2022

New J. Chem., 2022,46, 20102-20107

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

S. R. Kadam, R. Bar-Ziv and M. Bar-Sadan, New J. Chem., 2022, 46, 20102 DOI: 10.1039/D2NJ02687B

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