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Low-Loading Pt Nanoparticles Anchored on Niobium Nitride for Highly Efficient Alkaline Hydrogen Evolution.

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Title: Low-Loading Pt Nanoparticles Anchored on Niobium Nitride for Highly Efficient Alkaline Hydrogen Evolution.
Authors: Yang, Siyi1 (AUTHOR), Wang, Guimin1,2 (AUTHOR), Yang, Wei1 (AUTHOR), Li, Xiaoru1,2 (AUTHOR), Lv, Chunmei2 (AUTHOR), Wu, Aiping1 (AUTHOR), Yan, Haijing1 (AUTHOR), Jiao, Yanqing1 (AUTHOR)
Source: Nanomaterials (2079-4991). Jun2026, Vol. 16 Issue 12, p751. 15p.
Subjects: Niobium nitride, Hydrogen evolution reactions, Nanostructures, Electrocatalysts, Charge transfer, Water electrolysis, Electrocatalysis, Platinum nanoparticles
Abstract: Pt-based catalysts remain the premier hydrogen evolution reaction (HER) electrocatalysts for anion-exchange membrane water electrolyzers. Faced with insufficient abundance and high cost, developing low-Pt electrocatalysts that can accelerate the Volmer step while maintaining high durability is critically important yet challenging. Herein, we propose niobium nitrides with excellent conductivity and stability as supports for Pt to enhance the alkaline HER. A polyoxoniobate-based molecular self-assembly strategy was ingeniously designed to fabricate Nb4N5 nanospheres, on which ultrafine Pt nanoparticles (NPs) were successfully immobilized, forming Pt/Nb4N5 heterostructures (denoted as Pt/Nb4N5). The rich interface structures with metal–support interactions drive charge transfer from Pt to Nb4N5, which modulates the electronic structure of Pt and Nb sites, collectively lowering interfacial charge transfer resistance, generating abundant active sites, and improving catalyst durability. Consequently, the Pt/Nb4N5 catalyst achieves exceptional HER performance, including a low overpotential (22 mV@10 mA cm−2), a small Tafel slope (26 mV dec−1), an 11.5-fold higher mass activity at 150 mV, and remarkable durability, drastically surpassing the commercial Pt/C catalyst. Notably, the Pt/Nb4N5-based electrolyzer requires only 1.508 V to drive 10 mA cm−2. This work offers a viable pathway to engineer highly active and durable low-Pt electrocatalysts for energy-related applications. [ABSTRACT FROM AUTHOR]
Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
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  Data: Low-Loading Pt Nanoparticles Anchored on Niobium Nitride for Highly Efficient Alkaline Hydrogen Evolution.
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  Data: <searchLink fieldCode="AR" term="%22Yang%2C+Siyi%22">Yang, Siyi</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wang%2C+Guimin%22">Wang, Guimin</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yang%2C+Wei%22">Yang, Wei</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Li%2C+Xiaoru%22">Li, Xiaoru</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Lv%2C+Chunmei%22">Lv, Chunmei</searchLink><relatesTo>2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Wu%2C+Aiping%22">Wu, Aiping</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Yan%2C+Haijing%22">Yan, Haijing</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Jiao%2C+Yanqing%22">Jiao, Yanqing</searchLink><relatesTo>1</relatesTo> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Nanomaterials+%282079-4991%29%22">Nanomaterials (2079-4991)</searchLink>. Jun2026, Vol. 16 Issue 12, p751. 15p.
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  Data: <searchLink fieldCode="DE" term="%22Niobium+nitride%22">Niobium nitride</searchLink><br /><searchLink fieldCode="DE" term="%22Hydrogen+evolution+reactions%22">Hydrogen evolution reactions</searchLink><br /><searchLink fieldCode="DE" term="%22Nanostructures%22">Nanostructures</searchLink><br /><searchLink fieldCode="DE" term="%22Electrocatalysts%22">Electrocatalysts</searchLink><br /><searchLink fieldCode="DE" term="%22Charge+transfer%22">Charge transfer</searchLink><br /><searchLink fieldCode="DE" term="%22Water+electrolysis%22">Water electrolysis</searchLink><br /><searchLink fieldCode="DE" term="%22Electrocatalysis%22">Electrocatalysis</searchLink><br /><searchLink fieldCode="DE" term="%22Platinum+nanoparticles%22">Platinum nanoparticles</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Pt-based catalysts remain the premier hydrogen evolution reaction (HER) electrocatalysts for anion-exchange membrane water electrolyzers. Faced with insufficient abundance and high cost, developing low-Pt electrocatalysts that can accelerate the Volmer step while maintaining high durability is critically important yet challenging. Herein, we propose niobium nitrides with excellent conductivity and stability as supports for Pt to enhance the alkaline HER. A polyoxoniobate-based molecular self-assembly strategy was ingeniously designed to fabricate Nb4N5 nanospheres, on which ultrafine Pt nanoparticles (NPs) were successfully immobilized, forming Pt/Nb4N5 heterostructures (denoted as Pt/Nb4N5). The rich interface structures with metal–support interactions drive charge transfer from Pt to Nb4N5, which modulates the electronic structure of Pt and Nb sites, collectively lowering interfacial charge transfer resistance, generating abundant active sites, and improving catalyst durability. Consequently, the Pt/Nb4N5 catalyst achieves exceptional HER performance, including a low overpotential (22 mV@10 mA cm−2), a small Tafel slope (26 mV dec−1), an 11.5-fold higher mass activity at 150 mV, and remarkable durability, drastically surpassing the commercial Pt/C catalyst. Notably, the Pt/Nb4N5-based electrolyzer requires only 1.508 V to drive 10 mA cm−2. This work offers a viable pathway to engineer highly active and durable low-Pt electrocatalysts for energy-related applications. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Nanomaterials (2079-4991) is the property of MDPI and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.3390/nano16120751
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      – Code: eng
        Text: English
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        PageCount: 15
        StartPage: 751
    Subjects:
      – SubjectFull: Niobium nitride
        Type: general
      – SubjectFull: Hydrogen evolution reactions
        Type: general
      – SubjectFull: Nanostructures
        Type: general
      – SubjectFull: Electrocatalysts
        Type: general
      – SubjectFull: Charge transfer
        Type: general
      – SubjectFull: Water electrolysis
        Type: general
      – SubjectFull: Electrocatalysis
        Type: general
      – SubjectFull: Platinum nanoparticles
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      – TitleFull: Low-Loading Pt Nanoparticles Anchored on Niobium Nitride for Highly Efficient Alkaline Hydrogen Evolution.
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              Text: Jun2026
              Type: published
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