Synergistic WO3·2H2O Nanoplates/WS2 Hybrid Catalysts for High-Efficiency Hydrogen Evolution

Lun Yang; Xiaobin Zhu; Shijie Xiong; Xinglong Wu; Yun Shan; Paul K. Chu

doi:10.1021/acsami.6b04045

Synergistic WO₃·2H₂O Nanoplates/WS₂ Hybrid Catalysts for High-Efficiency Hydrogen Evolution

Lun Yang
, Xiaobin Zhu
, Shijie Xiong
, Xinglong Wu^*
, Yun Shan
, Paul K. Chu

^*Corresponding author for this work

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

134 Citations (Scopus)

Abstract

Tungsten trioxide dihydrate (WO₃·2H₂O) nanoplates are prepared by in situ anodic oxidation of tungsten disulfide (WS₂) film on carbon fiber paper (CFP). The WO₃·2H₂O/WS₂ hybrid catalyst exhibits excellent synergistic effects which facilitate the kinetics of the hydrogen evolution reaction (HER). The electrochromatic effect takes place via hydrogen intercalation into WO₃·2H₂O. This process is accelerated by the desirable proton diffusion coefficient in the layered WO₃·2H₂O. Hydrogen spillover from WO₃·2H₂O to WS₂ occurs via atomic polarization caused by the electric field of the charges on the planar defect or edge active sites of WS₂. The optimized hybrid catalyst presents a geometrical current density of 100 mA cm^–2 at 152 mV overpotential with a Tafel slope of ∼54 mV per decade, making the materials one of the most active nonprecious metal HER catalysts.

Original language	English
Pages (from-to)	13966-13972
Journal	ACS Applied Materials and Interfaces
Volume	8
Issue number	22
Online published	23 May 2016
DOIs	https://doi.org/10.1021/acsami.6b04045
Publication status	Published - 8 Jun 2016

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This output contributes to the following UN Sustainable Development Goals (SDGs)

SDG 7 Affordable and Clean Energy

Research Keywords

hydrogen evolution
spillover effect
synergism
WO3·2H2O
WS2

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10.1021/acsami.6b04045

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Cite this

@article{6e39c974847d47b2a994f3db4d39e12d,

title = "Synergistic WO3·2H2O Nanoplates/WS2 Hybrid Catalysts for High-Efficiency Hydrogen Evolution",

abstract = "Tungsten trioxide dihydrate (WO3·2H2O) nanoplates are prepared by in situ anodic oxidation of tungsten disulfide (WS2) film on carbon fiber paper (CFP). The WO3·2H2O/WS2 hybrid catalyst exhibits excellent synergistic effects which facilitate the kinetics of the hydrogen evolution reaction (HER). The electrochromatic effect takes place via hydrogen intercalation into WO3·2H2O. This process is accelerated by the desirable proton diffusion coefficient in the layered WO3·2H2O. Hydrogen spillover from WO3·2H2O to WS2 occurs via atomic polarization caused by the electric field of the charges on the planar defect or edge active sites of WS2. The optimized hybrid catalyst presents a geometrical current density of 100 mA cm–2 at 152 mV overpotential with a Tafel slope of ∼54 mV per decade, making the materials one of the most active nonprecious metal HER catalysts.",

keywords = "hydrogen evolution, spillover effect, synergism, WO3·2H2O, WS2",

author = "Lun Yang and Xiaobin Zhu and Shijie Xiong and Xinglong Wu and Yun Shan and Chu, \{Paul K.\}",

year = "2016",

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TY - JOUR

T1 - Synergistic WO3·2H2O Nanoplates/WS2 Hybrid Catalysts for High-Efficiency Hydrogen Evolution

AU - Yang, Lun

AU - Zhu, Xiaobin

AU - Xiong, Shijie

AU - Wu, Xinglong

AU - Shan, Yun

AU - Chu, Paul K.

PY - 2016/6/8

Y1 - 2016/6/8

N2 - Tungsten trioxide dihydrate (WO3·2H2O) nanoplates are prepared by in situ anodic oxidation of tungsten disulfide (WS2) film on carbon fiber paper (CFP). The WO3·2H2O/WS2 hybrid catalyst exhibits excellent synergistic effects which facilitate the kinetics of the hydrogen evolution reaction (HER). The electrochromatic effect takes place via hydrogen intercalation into WO3·2H2O. This process is accelerated by the desirable proton diffusion coefficient in the layered WO3·2H2O. Hydrogen spillover from WO3·2H2O to WS2 occurs via atomic polarization caused by the electric field of the charges on the planar defect or edge active sites of WS2. The optimized hybrid catalyst presents a geometrical current density of 100 mA cm–2 at 152 mV overpotential with a Tafel slope of ∼54 mV per decade, making the materials one of the most active nonprecious metal HER catalysts.

AB - Tungsten trioxide dihydrate (WO3·2H2O) nanoplates are prepared by in situ anodic oxidation of tungsten disulfide (WS2) film on carbon fiber paper (CFP). The WO3·2H2O/WS2 hybrid catalyst exhibits excellent synergistic effects which facilitate the kinetics of the hydrogen evolution reaction (HER). The electrochromatic effect takes place via hydrogen intercalation into WO3·2H2O. This process is accelerated by the desirable proton diffusion coefficient in the layered WO3·2H2O. Hydrogen spillover from WO3·2H2O to WS2 occurs via atomic polarization caused by the electric field of the charges on the planar defect or edge active sites of WS2. The optimized hybrid catalyst presents a geometrical current density of 100 mA cm–2 at 152 mV overpotential with a Tafel slope of ∼54 mV per decade, making the materials one of the most active nonprecious metal HER catalysts.

KW - hydrogen evolution

KW - spillover effect

KW - synergism

KW - WO3·2H2O

KW - WS2

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U2 - 10.1021/acsami.6b04045

DO - 10.1021/acsami.6b04045

M3 - RGC 21 - Publication in refereed journal

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VL - 8

SP - 13966

EP - 13972

JO - ACS Applied Materials and Interfaces

JF - ACS Applied Materials and Interfaces

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