Reversible hydrogen spillover in Ru-WO₃₋ₓ enhances hydrogen evolution activity in neutral pH water splitting
Noble metal electrocatalysts (e.g., Pt, Ru, etc.) suffer from sluggish kinetics of water dissociation for the electrochemical reduction of water to molecular hydrogen in alkaline and neutral pH environments. Herein, we found that an integration of Ru nanoparticles (NPs) on oxygen-deficient WO3-x man...
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sg-ntu-dr.10356-1686562023-06-19T15:34:40Z Reversible hydrogen spillover in Ru-WO₃₋ₓ enhances hydrogen evolution activity in neutral pH water splitting Chen, Jiadong Chen, Chunhong Qin, Minkai Li, Ben Lin, Binbin Mao, Qing Yang, Hongbin Liu, Bin Wang, Yong School of Physical and Mathematical Sciences School of Chemical and Biomedical Engineering Engineering::Chemical engineering Electrokinesis Hydrogen Noble metal electrocatalysts (e.g., Pt, Ru, etc.) suffer from sluggish kinetics of water dissociation for the electrochemical reduction of water to molecular hydrogen in alkaline and neutral pH environments. Herein, we found that an integration of Ru nanoparticles (NPs) on oxygen-deficient WO3-x manifested a 24.0-fold increase in hydrogen evolution reaction (HER) activity compared with commercial Ru/C electrocatalyst in neutral electrolyte. Oxygen-deficient WO3-x is shown to possess large capacity for storing protons, which could be transferred to the Ru NPs under cathodic potential. This significantly increases the hydrogen coverage on the surface of Ru NPs in HER and thus changes the rate-determining step of HER on Ru from water dissociation to hydrogen recombination. Agency for Science, Technology and Research (A*STAR) Ministry of Education (MOE) Published version We are grateful for the financial support from the National Key R&D Program of China (2021YFB3801600), the National Natural Science Foundation of China (21872121, 21908189), the Fundamental Research Funds for the Central Universities (2017XZZX002−16), Ministry of Education of Singapore (Tier 1: RG4/20 and Tier 2: MOET2EP10120-0002), and Agency for Science, Technology and Research (AME IRG: A20E5c0080). 2023-06-13T07:25:52Z 2023-06-13T07:25:52Z 2022 Journal Article Chen, J., Chen, C., Qin, M., Li, B., Lin, B., Mao, Q., Yang, H., Liu, B. & Wang, Y. (2022). Reversible hydrogen spillover in Ru-WO₃₋ₓ enhances hydrogen evolution activity in neutral pH water splitting. Nature Communications, 13(1), 5382-. https://dx.doi.org/10.1038/s41467-022-33007-3 2041-1723 https://hdl.handle.net/10356/168656 10.1038/s41467-022-33007-3 36104336 2-s2.0-85138019679 1 13 5382 en MOET2EP10120-0002 AME IRG: A20E5c0080 RG4/20 MOET2EP10120-0002 Nature Communications © 2022 The Author(s). 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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/ licenses/by/4.0/. application/pdf |
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Engineering::Chemical engineering Electrokinesis Hydrogen Chen, Jiadong Chen, Chunhong Qin, Minkai Li, Ben Lin, Binbin Mao, Qing Yang, Hongbin Liu, Bin Wang, Yong Reversible hydrogen spillover in Ru-WO₃₋ₓ enhances hydrogen evolution activity in neutral pH water splitting |
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Noble metal electrocatalysts (e.g., Pt, Ru, etc.) suffer from sluggish kinetics of water dissociation for the electrochemical reduction of water to molecular hydrogen in alkaline and neutral pH environments. Herein, we found that an integration of Ru nanoparticles (NPs) on oxygen-deficient WO3-x manifested a 24.0-fold increase in hydrogen evolution reaction (HER) activity compared with commercial Ru/C electrocatalyst in neutral electrolyte. Oxygen-deficient WO3-x is shown to possess large capacity for storing protons, which could be transferred to the Ru NPs under cathodic potential. This significantly increases the hydrogen coverage on the surface of Ru NPs in HER and thus changes the rate-determining step of HER on Ru from water dissociation to hydrogen recombination. |
| author2 |
School of Physical and Mathematical Sciences |
| author_facet |
School of Physical and Mathematical Sciences Chen, Jiadong Chen, Chunhong Qin, Minkai Li, Ben Lin, Binbin Mao, Qing Yang, Hongbin Liu, Bin Wang, Yong |
| format |
Article |
| author |
Chen, Jiadong Chen, Chunhong Qin, Minkai Li, Ben Lin, Binbin Mao, Qing Yang, Hongbin Liu, Bin Wang, Yong |
| author_sort |
Chen, Jiadong |
| title |
Reversible hydrogen spillover in Ru-WO₃₋ₓ enhances hydrogen evolution activity in neutral pH water splitting |
| title_short |
Reversible hydrogen spillover in Ru-WO₃₋ₓ enhances hydrogen evolution activity in neutral pH water splitting |
| title_full |
Reversible hydrogen spillover in Ru-WO₃₋ₓ enhances hydrogen evolution activity in neutral pH water splitting |
| title_fullStr |
Reversible hydrogen spillover in Ru-WO₃₋ₓ enhances hydrogen evolution activity in neutral pH water splitting |
| title_full_unstemmed |
Reversible hydrogen spillover in Ru-WO₃₋ₓ enhances hydrogen evolution activity in neutral pH water splitting |
| title_sort |
reversible hydrogen spillover in ru-wo₃₋ₓ enhances hydrogen evolution activity in neutral ph water splitting |
| publishDate |
2023 |
| url |
https://hdl.handle.net/10356/168656 |
| _version_ |
1772825265460740096 |