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Erschienen in: Rare Metals 5/2023

06.02.2023 | Original Article

Vertically aligned W(Mo)S2/N-W(Mo)C-based light-assisted electrocatalysis for hydrogen evolution in acidic solutions

verfasst von: Lan-Fang Wang, Rui-Xia Yang, Jin-Zhi Fu, Yue-Yue Cao, Rui-Fang Ding, Xiao-Hong Xu

Erschienen in: Rare Metals | Ausgabe 5/2023

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Abstract

The development of non-noble-metal hydrogen evolution electrocatalysts holds great promises for a sustainable energy system. Here, a hybrid W(Mo)S2/N-W(Mo)C nanosheet with array structures was reported for an efficient light-assisted hydrogen evolution electrocatalysts in acidic solutions. The resulting vertically aligned W(Mo)S2/N-W(Mo)C was supported on a conductive carbon fiber paper, which can be produced through annealing W(Mo)S2 nanosheets by simultaneous carbonization and N-doping in Ar/H2 atmosphere. This optimized WS2/N-WC and MoS2/N-MoC electrode exhibits remarkable light-assisted electrocatalysis activity with overpotentials of 0.120 and 0.122 V at 10 mA·cm−1 in acidic solutions, respectively. Such high hydrogen evolution activities should be attributed to the electrocatalytic synergistic effects of the abundant active sites existing in different phase boundaries and the absorption for ultraviolet–visible light. This study shows that synthesis of low-cost and highly active W(Mo)S2-based hydrogen evolution electrocatalyst opens up a route toward the development of scalable production of hydrogen fuels.

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Metadaten
Titel
Vertically aligned W(Mo)S2/N-W(Mo)C-based light-assisted electrocatalysis for hydrogen evolution in acidic solutions
verfasst von
Lan-Fang Wang
Rui-Xia Yang
Jin-Zhi Fu
Yue-Yue Cao
Rui-Fang Ding
Xiao-Hong Xu
Publikationsdatum
06.02.2023
Verlag
Nonferrous Metals Society of China
Erschienen in
Rare Metals / Ausgabe 5/2023
Print ISSN: 1001-0521
Elektronische ISSN: 1867-7185
DOI
https://doi.org/10.1007/s12598-022-02250-4

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