Reversible hydrogen spillover in Ru-WO3-x enhances hydrogen evolution activity in neutral pH water splitting

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

  • Jiadong Chen
  • Chunhong Chen
  • Minkai Qin
  • Ben Li
  • Binbin Lin
  • Qing Mao
  • Hongbin Yang
  • Yong Wang

Detail(s)

Original languageEnglish
Article number5382
Journal / PublicationNature Communications
Volume13
Online published14 Sept 2022
Publication statusPublished - 2022
Externally publishedYes

Link(s)

Abstract

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. © 2022, The Author(s).

Research Area(s)

Citation Format(s)

Reversible hydrogen spillover in Ru-WO3-x enhances hydrogen evolution activity in neutral pH water splitting. / Chen, Jiadong; Chen, Chunhong; Qin, Minkai et al.
In: Nature Communications, Vol. 13, 5382, 2022.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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