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Synergistic Effect of Dual-Doped Carbon on Mo(2)C Nanocrystals Facilitates Alkaline Hydrogen Evolution

Molybdenum carbide (Mo(2)C) materials are promising electrocatalysts with potential applications in hydrogen evolution reaction (HER) due to low cost and Pt-like electronic structures. Nevertheless, their HER activity is usually hindered by the strong hydrogen binding energy. Moreover, the lack of w...

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Autores principales: Zhou, Min, Jiang, Xiaoli, Kong, Weijie, Li, Hangfei, Lu, Fei, Zhou, Xin, Zhang, Yagang
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer Nature Singapore 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10315362/
https://www.ncbi.nlm.nih.gov/pubmed/37394676
http://dx.doi.org/10.1007/s40820-023-01135-0
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author Zhou, Min
Jiang, Xiaoli
Kong, Weijie
Li, Hangfei
Lu, Fei
Zhou, Xin
Zhang, Yagang
author_facet Zhou, Min
Jiang, Xiaoli
Kong, Weijie
Li, Hangfei
Lu, Fei
Zhou, Xin
Zhang, Yagang
author_sort Zhou, Min
collection PubMed
description Molybdenum carbide (Mo(2)C) materials are promising electrocatalysts with potential applications in hydrogen evolution reaction (HER) due to low cost and Pt-like electronic structures. Nevertheless, their HER activity is usually hindered by the strong hydrogen binding energy. Moreover, the lack of water-cleaving sites makes it difficult for the catalysts to work in alkaline solutions. Here, we designed and synthesized a B and N dual-doped carbon layer that encapsulated on Mo(2)C nanocrystals (Mo(2)C@BNC) for accelerating HER under alkaline condition. The electronic interactions between the Mo(2)C nanocrystals and the multiple-doped carbon layer endow a near-zero H adsorption Gibbs free energy on the defective C atoms over the carbon shell. Meanwhile, the introduced B atoms afford optimal H(2)O adsorption sites for the water-cleaving step. Accordingly, the dual-doped Mo(2)C catalyst with synergistic effect of non-metal sites delivers superior HER performances of a low overpotential (99 mV@10 mA cm(−2)) and a small Tafel slope (58.1 mV dec(−1)) in 1 M KOH solution. Furthermore, it presents a remarkable activity that outperforming the commercial 10% Pt/C catalyst at large current density, demonstrating its applicability in industrial water splitting. This study provides a reasonable design strategy towards noble-metal-free HER catalysts with high activity. [Image: see text] SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s40820-023-01135-0.
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spelling pubmed-103153622023-07-04 Synergistic Effect of Dual-Doped Carbon on Mo(2)C Nanocrystals Facilitates Alkaline Hydrogen Evolution Zhou, Min Jiang, Xiaoli Kong, Weijie Li, Hangfei Lu, Fei Zhou, Xin Zhang, Yagang Nanomicro Lett Article Molybdenum carbide (Mo(2)C) materials are promising electrocatalysts with potential applications in hydrogen evolution reaction (HER) due to low cost and Pt-like electronic structures. Nevertheless, their HER activity is usually hindered by the strong hydrogen binding energy. Moreover, the lack of water-cleaving sites makes it difficult for the catalysts to work in alkaline solutions. Here, we designed and synthesized a B and N dual-doped carbon layer that encapsulated on Mo(2)C nanocrystals (Mo(2)C@BNC) for accelerating HER under alkaline condition. The electronic interactions between the Mo(2)C nanocrystals and the multiple-doped carbon layer endow a near-zero H adsorption Gibbs free energy on the defective C atoms over the carbon shell. Meanwhile, the introduced B atoms afford optimal H(2)O adsorption sites for the water-cleaving step. Accordingly, the dual-doped Mo(2)C catalyst with synergistic effect of non-metal sites delivers superior HER performances of a low overpotential (99 mV@10 mA cm(−2)) and a small Tafel slope (58.1 mV dec(−1)) in 1 M KOH solution. Furthermore, it presents a remarkable activity that outperforming the commercial 10% Pt/C catalyst at large current density, demonstrating its applicability in industrial water splitting. This study provides a reasonable design strategy towards noble-metal-free HER catalysts with high activity. [Image: see text] SUPPLEMENTARY INFORMATION: The online version contains supplementary material available at 10.1007/s40820-023-01135-0. Springer Nature Singapore 2023-07-03 /pmc/articles/PMC10315362/ /pubmed/37394676 http://dx.doi.org/10.1007/s40820-023-01135-0 Text en © The Author(s) 2023 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Zhou, Min
Jiang, Xiaoli
Kong, Weijie
Li, Hangfei
Lu, Fei
Zhou, Xin
Zhang, Yagang
Synergistic Effect of Dual-Doped Carbon on Mo(2)C Nanocrystals Facilitates Alkaline Hydrogen Evolution
title Synergistic Effect of Dual-Doped Carbon on Mo(2)C Nanocrystals Facilitates Alkaline Hydrogen Evolution
title_full Synergistic Effect of Dual-Doped Carbon on Mo(2)C Nanocrystals Facilitates Alkaline Hydrogen Evolution
title_fullStr Synergistic Effect of Dual-Doped Carbon on Mo(2)C Nanocrystals Facilitates Alkaline Hydrogen Evolution
title_full_unstemmed Synergistic Effect of Dual-Doped Carbon on Mo(2)C Nanocrystals Facilitates Alkaline Hydrogen Evolution
title_short Synergistic Effect of Dual-Doped Carbon on Mo(2)C Nanocrystals Facilitates Alkaline Hydrogen Evolution
title_sort synergistic effect of dual-doped carbon on mo(2)c nanocrystals facilitates alkaline hydrogen evolution
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10315362/
https://www.ncbi.nlm.nih.gov/pubmed/37394676
http://dx.doi.org/10.1007/s40820-023-01135-0
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