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

Jiadong Chen; Chunhong Chen; Minkai Qin; Ben Li; Binbin Lin; Qing Mao; Hongbin Yang; Bin Liu; Yong Wang

doi:10.1038/s41467-022-33007-3

Reversible hydrogen spillover in Ru-WO_3-x enhances hydrogen evolution activity in neutral pH water splitting

Jiadong Chen, Chunhong Chen, Minkai Qin, Ben Li, Binbin Lin, Qing Mao, Hongbin Yang, Bin Liu^*, Yong Wang^*

^*Corresponding author for this work

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

385 Citations (Scopus)

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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 WO_3-x manifested a 24.0-fold increase in hydrogen evolution reaction (HER) activity compared with commercial Ru/C electrocatalyst in neutral electrolyte. Oxygen-deficient WO_3-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).

Original language	English
Article number	5382
Journal	Nature Communications
Volume	13
Online published	14 Sept 2022
DOIs	https://doi.org/10.1038/s41467-022-33007-3
Publication status	Published - 2022
Externally published	Yes

Publisher's Copyright Statement

This full text is made available under CC-BY 4.0. https://creativecommons.org/licenses/by/4.0/

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Cite this

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title = "Reversible hydrogen spillover in Ru-WO3-x enhances hydrogen evolution activity in neutral pH water splitting",

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. {\textcopyright} 2022, The Author(s).",

author = "Jiadong Chen and Chunhong Chen and Minkai Qin and Ben Li and Binbin Lin and Qing Mao and Hongbin Yang and Bin Liu and Yong Wang",

year = "2022",

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language = "English",

volume = "13",

journal = "Nature Communications",

issn = "2041-1723",

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TY - JOUR

T1 - Reversible hydrogen spillover in Ru-WO3-x enhances hydrogen evolution activity in neutral pH water splitting

AU - Chen, Jiadong

AU - Chen, Chunhong

AU - Qin, Minkai

AU - Li, Ben

AU - Lin, Binbin

AU - Mao, Qing

AU - Yang, Hongbin

AU - Liu, Bin

AU - Wang, Yong

PY - 2022

Y1 - 2022

N2 - 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).

AB - 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).

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U2 - 10.1038/s41467-022-33007-3

DO - 10.1038/s41467-022-33007-3

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SN - 2041-1723

VL - 13

JO - Nature Communications

JF - Nature Communications

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