Defect engineering of molybdenum disulfide through ion irradiation to boost hydrogen evolution reaction performance

Sun, Cheng; Wang, Peipei; Wang, Hao; Xu, Chuan; Zhu, Juntong; Liang, Yutong; Su, Ying; Jiang, Yining; Wu, Wenyuan; Fu, Engang; Zou, Guifu

doi:10.1007/s12274-019-2400-1

Cited by 69 publications

(46 citation statements)

References 41 publications

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“…Ion irradiation [71] can also be used to introduce defects, although this method has not been widely used in the preparation of defective MoS 2 -based electrocatalysts. Although there are many methods to prepare defective MoS 2 electrocatalysts for hydrogen evolution, some problems are difficult to overcome.…”

Section: Ultrasonic Exfoliationmentioning

confidence: 99%

Defects Enhance the Electrocatalytic Hydrogen Evolution Properties of MoS₂‐based Materials

Cheng

Song

et al. 2020

Chemistry An Asian Journal

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MoS 2 have recently emerged as alternatives to noble metals as electrocatalysts for the hydrogen evolution reaction (HER) owing to their abundance and low cost. Considering the shortcomings of MoS 2 , including insufficient active sites, inert basal plane, and poor conductivity, the electrocatalytic hydrogen evolution properties of MoS 2 can be improved in three ways: activating the inert basal plane to improve intrinsic activity, increasing active edge sites, and improving the conductivity. Defects can adjust the surface electronic structure of the crystal to bring the hydrogen adsorption free energy closer to zero. Therefore, current research has mainly used S-vacancies to activate the inert basal surface of MoS 2 ; used edge defects to increase the number of active sites; and used defective conductive carbon supports to improve the conductivity of MoS 2-based catalysts. This review introduces researches on improving the performance of MoS 2 for HER by considering the purpose, characterization, and preparation of defects.

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Section: Ultrasonic Exfoliationmentioning

confidence: 99%

Defects Enhance the Electrocatalytic Hydrogen Evolution Properties of MoS₂‐based Materials

Cheng

Song

et al. 2020

Chemistry An Asian Journal

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“…Xie et al [ 150 ] engineered the chemical reaction for the synthesis of MoS 2 to generate defects using different concentrations of precursors and thiourea and effectively increased the catalytically active edge sites. Electrochemical performance of the defective 2D TMDCs with active edge site is shown to significantly improve the catalytic performances during the hydrogen evolution reaction [ 148 , 150 , 169 ].…”

Section: Defect Formations and Crystal Qualitymentioning

confidence: 99%

Two-Dimensional Materials in Large-Areas: Synthesis, Properties and Applications

et al. 2020

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HIGHLIGHTS • Two-dimensional materials including TMDCs, hBN, graphene, non-layered compounds, black phosphorous, Xenes and other emerging materials with large lateral dimensions exceeding a hundred micrometres are summarised detailing their synthetic strategies. • Crystal quality optimisations and defect engineering are discussed for large-area two-dimensional materials synthesis. • Electronics and optoelectronics applications enabled by large-area two-dimensional materials are explored. .

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“…Furthermore, introducing crystal defects is also a common route to increase the number of active sites and intrinsic activity. [ 249–251 ] Therefore, tailoring the defects of wide‐bandgap electrocatalysts may be a compelling scheme to implement high‐performance photothermy‐assisted electrocatalytic HER/OER in the future.…”

Section: Light‐assisted Electrocatalytic Her/oermentioning

confidence: 99%

Promoting Electrocatalytic Hydrogen Evolution Reaction and Oxygen Evolution Reaction by Fields: Effects of Electric Field, Magnetic Field, Strain, and Light

et al. 2020

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promising alternative to fossil fuels. Water electrolysis by renewable resourcederived electricity represents a facile and green route to produce H 2. [1-13] Generally, the key to implement high-performance water splitting is to develop economically viable, efficient, and robust electrocatalysts to lower the activation potential barriers. Thus far, researchers have devoted extensive enthusiasm to the investigation of electrocatalysts. Currently, most efforts have been taken on the search for new materials, [14-16] regulation of morphology, [17] crystallinity, [18] facet, [19] component, [20-24] defect, [25,26] matter phase, [27,28] or the compositing of various materials with synergy. [29-36] However, the performances of emerging nonnoble electrocatalysts still lag behind those of noble ones. To address this issue, researchers have turned their attention beyond the electrocatalysts themselves. Field-assisted electrocatalysis is the electrocatalytic reaction proceeded in the presence of a field. It represents a promising methodology since it exerts an additional degree of freedom to engineer an electrochemical process. Inspiringly, indisputable improvements in electrocatalytic hydrogen evolution reaction (HER) and oxygen evolution reaction (OER) have been implemented with the assist of various fields, including electric field, magnetic field, strain, and light. For example, the electrocatalytic HER of a MoS 2 nanosheet is markedly boosted by simply exploiting a back gate voltage of 5 V. [37] Its overpotential at −100 mA cm −2 is decreased from 240 to 38 mV. In addition, enhancement of alkaline water electrolysis is achieved by applying a moderate magnetic field (≤450 mT) to an electrocatalytic anode consists of highly magnetic electrocatalysts. [38] Its current density increments are beyond 100%. Furthermore, the HER activity of β-PdH x increases monotonically as the applied strain increases from 0% to 4.5%. [39] Lastly, an approximately threefold increase in current density of Au-MoS 2 for electrocatalytic HER is realized upon the illumination of IR light. [40] These results undoubtedly elucidate that applying a field during electrocataly sis opens up great opportunities toward further improving electrocatalytic activity. Moreover, this approach provides merits of facile, dynamical, continuous, reversible, and universal control. Despite fascinating achievements, these investigations are relatively scattered. The underneath mechanisms and principles Hydrogen fuel is considered as one of the most clean renewable resources, warranting it a primary alternative to fossil fuels for future energy supplies. Electrocatalytic water splitting is an eco-friendly technique for high-purity hydrogen production. However, the sluggish dynamics of its two halfreactions, hydrogen evolution reaction (HER) and oxygen evolution reaction (OER), are tough challenges impeding the practical application of this technology. In these years, external field-assisted HER and OER have attracted extensive research interests. Herein, the effects o...

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Defect engineering of molybdenum disulfide through ion irradiation to boost hydrogen evolution reaction performance

Cited by 69 publications

References 41 publications

Defects Enhance the Electrocatalytic Hydrogen Evolution Properties of MoS₂‐based Materials

Defects Enhance the Electrocatalytic Hydrogen Evolution Properties of MoS₂‐based Materials

Two-Dimensional Materials in Large-Areas: Synthesis, Properties and Applications

Promoting Electrocatalytic Hydrogen Evolution Reaction and Oxygen Evolution Reaction by Fields: Effects of Electric Field, Magnetic Field, Strain, and Light

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Defect engineering of molybdenum disulfide through ion irradiation to boost hydrogen evolution reaction performance

Cited by 69 publications

References 41 publications

Defects Enhance the Electrocatalytic Hydrogen Evolution Properties of MoS2‐based Materials

Defects Enhance the Electrocatalytic Hydrogen Evolution Properties of MoS2‐based Materials

Two-Dimensional Materials in Large-Areas: Synthesis, Properties and Applications

Promoting Electrocatalytic Hydrogen Evolution Reaction and Oxygen Evolution Reaction by Fields: Effects of Electric Field, Magnetic Field, Strain, and Light

Contact Info

Product

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Defects Enhance the Electrocatalytic Hydrogen Evolution Properties of MoS₂‐based Materials

Defects Enhance the Electrocatalytic Hydrogen Evolution Properties of MoS₂‐based Materials