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Atomic and electronic modulation of self-supported nickel-vanadium layered double hydroxide to accelerate water splitting kinetics

Author

Listed:
  • Dewen Wang

    (Changchun Institute of Applied Chemistry, Chinese Academy of Sciences
    University of Science and Technology of China)

  • Qun Li

    (Changchun Institute of Applied Chemistry, Chinese Academy of Sciences
    University of Science and Technology of China)

  • Ce Han

    (Changchun Institute of Applied Chemistry, Chinese Academy of Sciences)

  • Qingqing Lu

    (Changchun Institute of Applied Chemistry, Chinese Academy of Sciences
    University of Chinese Academy of Sciences)

  • Zhicai Xing

    (Changchun Institute of Applied Chemistry, Chinese Academy of Sciences)

  • Xiurong Yang

    (Changchun Institute of Applied Chemistry, Chinese Academy of Sciences
    University of Science and Technology of China)

Abstract

Herein, ruthenium (Ru) and iridium (Ir) are introduced to tailor the atomic and electronic structure of self-supported nickel-vanadium (NiV) layered double hydroxide to accelerate water splitting kinetics, and the origin of high hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) activities are analyzed at atomic level. X-ray photoelectron spectroscopy and X-ray absorption near-edge structure spectroscopy studies reveal synergistic electronic interactions among Ni, V, and Ru (Ir) cations. Raman spectra and Fourier and wavelet transform analyses of the extended X-ray absorption fine structure indicate modulated local coordination environments around the Ni and V cations, and the existence of V vacancies. The Debye–Waller factor suggests a severely distorted octahedral V environment caused by the incorporation of Ru and Ir. Theoretical calculations further confirm that Ru or Ir doping could optimize the adsorption energy of intermediates in the Volmer and Heyrovsky steps for HER and accelerate the whole kinetic process for OER.

Suggested Citation

  • Dewen Wang & Qun Li & Ce Han & Qingqing Lu & Zhicai Xing & Xiurong Yang, 2019. "Atomic and electronic modulation of self-supported nickel-vanadium layered double hydroxide to accelerate water splitting kinetics," Nature Communications, Nature, vol. 10(1), pages 1-12, December.
    • Handle: RePEc:nat:natcom:v:10:y:2019:i:1:d:10.1038_s41467-019-11765-x
    DOI: 10.1038/s41467-019-11765-x
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    Cited by:

    1. Siliu Lyu & Chenxi Guo & Jianing Wang & Zhongjian Li & Bin Yang & Lecheng Lei & Liping Wang & Jianping Xiao & Tao Zhang & Yang Hou, 2022. "Exceptional catalytic activity of oxygen evolution reaction via two-dimensional graphene multilayer confined metal-organic frameworks," Nature Communications, Nature, vol. 13(1), pages 1-8, December.

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