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Amorphous nickel sulfoselenide for efficient electrochemical urea-assisted hydrogen production in alkaline media

Chen, Nuo, Du, Ying-Xia, Zhang, Geng, Lu, Wang-Ting, Cao, Fei-Fei·2021·Nano Energy

Abstract

Abstract Amorphous Ni sulfoselenide on the surface of Ni(OH)2 nanoplate that is supported by nickel foam is synthesized, which demonstrates high activity and durability for hydrogen evolution reaction (HER) and urea oxidation reaction (UOR) in alkaline media. As for HER, the introduction of sulfur in Ni sulfoselenide not only increases the electrochemical active area, but also improves the water adsorption ability and provides an optimal adsorption site for hydrogen atom. As for UOR, the in-situ formed amorphous oxyhydroxide is believed as the real active species. The electrolyzer assembled by Ni sulfoselenide electrodes shows a low voltage of 1.47 at 10 mA cm−2 in 1 M KOH + 0.5 M urea, which is much lower than that required for overall water splitting. The present work demonstrates an effective bifunctional electrode for HER and UOR that can be used to produce hydrogen and remove pollutant (urea) in water at the same time.

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Metadata

Authors
Chen, N., Du, Y.-X., Zhang, G., Lu, W.-T., & Cao, F.-F.
Venue
Nano Energy
Publisher
Elsevier BV
Published
2021-03
Volume
81
Pages
105605
ISSN
2211-2855 (ISSN-L)
OpenAlex
W3104915477
Cited by
182
References
5
FWCI
4.72
Type
journal article
Language
en
Open access
closed

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CoChat. (2026). Citation check: Amorphous nickel sulfoselenide for efficient electrochemical urea-assisted hydrogen production in alkaline media. https://app.cochat.ai/papers/10.1016/j.nanoen.2020.105605
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Chen, N., Du, Y.-X., Zhang, G., Lu, W.-T., & Cao, F.-F. (2021). Amorphous nickel sulfoselenide for efficient electrochemical urea-assisted hydrogen production in alkaline media. Nano Energy. https://doi.org/10.1016/j.nanoen.2020.105605

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