IDEAS home Printed from https://ideas.repec.org/a/eee/renene/v225y2024ics0960148124003331.html
   My bibliography  Save this article

Few-layer MoAlB nanosheets with Al vacancies enhanced hydroxyl adsorption for improved water oxidation kinetics

Author

Listed:
  • Chen, Huayu
  • Wang, Zehao
  • He, He
  • Chen, Jiadian
  • Yin, Hang
  • Yu, Dandan
  • Liang, Junhui
  • Qin, Laishun
  • Huang, Yuexiang
  • Chen, Da

Abstract

Few-layer metal borides (MBenes) have attracted much attention in electrocatalytic energy conversion due to the unique physical features, but the present studies are confined to the related bulk materials and the structure-activity relationship is unclear. Here, we successfully synthetized a few-layer exfoliated MoAlB (denoted as EMAB) material as an oxygen evolution reaction (OER) catalyst through a modified etching and exfoliation method to remove the Al atoms and separate the layers. The enhanced hydroxyl adsorption and reduced surface valence of Mo are responsible for the improved OER activity and stability. Density functional theory simulations indicate the hydroxyl adsorption sites are adjusted when removing the Al atoms. The reactive interface for the MAB is the Al layer, while introducing Al vacancies, the hydroxyls prefer to be firstly adsorbed on the Mo sites, and further adsorbed on Al sites, so the energy barrier is largely reduced to accelerate the reaction. This work expands the OER application and mechanism study of MBenes.

Suggested Citation

  • Chen, Huayu & Wang, Zehao & He, He & Chen, Jiadian & Yin, Hang & Yu, Dandan & Liang, Junhui & Qin, Laishun & Huang, Yuexiang & Chen, Da, 2024. "Few-layer MoAlB nanosheets with Al vacancies enhanced hydroxyl adsorption for improved water oxidation kinetics," Renewable Energy, Elsevier, vol. 225(C).
    • Handle: RePEc:eee:renene:v:225:y:2024:i:c:s0960148124003331
    DOI: 10.1016/j.renene.2024.120268
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0960148124003331
    Download Restriction: Full text for ScienceDirect subscribers only
    File URL: https://libkey.io/10.1016/j.renene.2024.120268?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    Corrections

    All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:eee:renene:v:225:y:2024:i:c:s0960148124003331. See general information about how to correct material in RePEc.

    If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.

    We have no bibliographic references for this item. You can help adding them by using this form .

    If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.

    For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/renewable-energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.