Modulating the Electronic Properties of MoS<sub>2</sub> Nanosheets for Electrochemical Hydrogen Production: A Review

Sun, Jianpeng; Meng, Xiangchao

doi:10.1021/acsanm.1c02832

Cited by 32 publications

(18 citation statements)

References 131 publications

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“…Among the various transition metal-based catalysts, molybdenum disulfide (MoS 2 ) has received great attention as a propitious HER catalyst due to its significant activity, material stability, and affordability. Hence, a non-noble MoS 2 catalyst is more accomplished to replace Pt-based catalysts. − …”

Section: Introductionmentioning

confidence: 99%

Provoking Metallic 1T Phase Conversion of 2H-MoS₂ via an Effectual Solvothermal Route for Electrocatalytic Water Reduction in Acid

Venkateshwaran

Kumar

2022

ACS Sustainable Chem. Eng.

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Recently, the exploration of MoS 2 -based catalysts especially with a metallic 1T phase has gained immense attention due to their improvised electrocatalytic performance in hydrogen evolution reaction (HER). The dominance in electrical conductivity, hydrophilicity, and density of active sites with the metallic 1T phase over a semiconducting 2H phase is liable for their promoted catalytic performance. The direct formation of MoS 2 with an electrocatalytically active 1T phase is hard to attain and demands a proficient method since it is a metastable phase, whereas the 2H phase is a thermodynamically stable and predominantly formed phase in MoS 2 . On the other hand, in MoS 2 , the phase conversion from the thermodynamically stable 2H phase to the metastable 1T phase can be feasible with the Li + ion exfoliation technique. Although it is the foremost employed technique for the industrial-scale formation of 1T-MoS 2 at present, the tedious and sedate intercalation/exfoliation process and the usage of explosive Li metal are the prime drawbacks within it. To overcome these issues, in this report, we have proposed a new route for the facile conversion of the 2H phase to the metallic 1T phase in MoS 2 , which is a solvothermal agitation process with N,N-dimethylformamide (DMF) solvent, where the interlayer expansion due to the intercalation of DMF was observed, which assisted in the attainment of maximal (78.6%) conversion of the 1T phase. Then, the electrocatalytic performance of the prepared 1T-MoS 2 catalysts in HER was tested and they showed tremendous activity. To attain a current density of 10 mA cm −2 , it demanded 262 mV with a lower Tafel slope value of 53 mV/dec. This humble expedient technique can be valid to the other 2D materials for the facile conversion of the 2H phase to the electrochemically active 1T phase.

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Section: Introductionmentioning

confidence: 99%

Provoking Metallic 1T Phase Conversion of 2H-MoS₂ via an Effectual Solvothermal Route for Electrocatalytic Water Reduction in Acid

Venkateshwaran

Kumar

2022

ACS Sustainable Chem. Eng.

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“…Seawater contains a large amount of Cl − , which will cause a CER on the anode, causing the anode to corrode, and seriously affecting the service life and electrolytic activity of the electrode. So far, many investigations of anticorrosion design have focused on the preparation of a protective layer [ 95 , 96 ].…”

Section: Design Strategies For a Corrosion-resistant Electrodementioning

confidence: 99%

Design Strategy of Corrosion-Resistant Electrodes for Seawater Electrolysis

Zhao

et al. 2023

Materials

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Electrocatalytic water splitting for hydrogen (H2) production has attracted more and more attention in the context of energy shortages. The use of scarce pure water resources, such as electrolyte, not only increases the cost but also makes application difficult on a large scale. Compared to pure water electrolysis, seawater electrolysis is more competitive in terms of both resource acquisition and economic benefits; however, the complex ionic environment in seawater also brings great challenges to seawater electrolysis technology. Specifically, chloride oxidation-related corrosion and the deposition of insoluble solids on the surface of electrodes during seawater electrolysis make a significant difference to electrocatalytic performance. In response to this issue, design strategies have been proposed to improve the stability of electrodes. Herein, basic principles of seawater electrolysis are first discussed. Then, the design strategy for corrosion-resistant electrodes for seawater electrolysis is recommended. Finally, a development direction for seawater electrolysis in the industrialization process is proposed.

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“…TMDs, as the earliest high-activity electrocatalyst applied in electrocatalytic water splitting, have been deeply studied due to excellent electrical structure and high electrochemical tunability, wherein the transition metal sulfides (TMSs) and transition metal selenides (TMSes) have made significant progress in the field of seawater splitting. [97][98][99][100] However, it suffers from the limitation of poor conductivity and less exposed active sites, 101,102 which meets the need to facilitate electron transfer and optimize the active site with effective approaches.…”

Section: Transition Metal Dichalcogenidementioning

confidence: 99%

Recent advances in transition metal‐based electrocatalysts for seawater electrolysis

Zhao

Sun

Meng

2022

Intl J of Energy Research

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Summary Low carbon‐footprint hydrogen generated from water splitting has attracted wide attention, which can satisfy future industrial requirements as a promising method. Compared with the scarcity of available freshwater, seawater splitting becomes worldwide research focus due to abundant seawater resources. Nevertheless, precious metal catalysts featured with high cost and low stability in seawater restrict its practical application. Recently, great progress of transition metals' (TM) compounds has been made toward seawater electrolysis, which made the process more practically feasible due to its abundant reserve and corrosion resistance. Therefore, it is necessary to understand the recent advances and challenges of TM‐based electrocatalysts in seawater; wherein few reviews have been reported so far. Herein, in this review, a comprehensive introduction of recently reported TM‐based electrocatalysts and advanced strategies for seawater electrolysis are provided. In particular, the challenges and perspectives of TM‐based electrocatalysts in the field of commercial application are briefly concluded at the end.

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Modulating the Electronic Properties of MoS₂ Nanosheets for Electrochemical Hydrogen Production: A Review

Cited by 32 publications

References 131 publications

Provoking Metallic 1T Phase Conversion of 2H-MoS₂ via an Effectual Solvothermal Route for Electrocatalytic Water Reduction in Acid

Provoking Metallic 1T Phase Conversion of 2H-MoS₂ via an Effectual Solvothermal Route for Electrocatalytic Water Reduction in Acid

Design Strategy of Corrosion-Resistant Electrodes for Seawater Electrolysis

Recent advances in transition metal‐based electrocatalysts for seawater electrolysis

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Modulating the Electronic Properties of MoS2 Nanosheets for Electrochemical Hydrogen Production: A Review

Cited by 32 publications

References 131 publications

Provoking Metallic 1T Phase Conversion of 2H-MoS2 via an Effectual Solvothermal Route for Electrocatalytic Water Reduction in Acid

Provoking Metallic 1T Phase Conversion of 2H-MoS2 via an Effectual Solvothermal Route for Electrocatalytic Water Reduction in Acid

Design Strategy of Corrosion-Resistant Electrodes for Seawater Electrolysis

Recent advances in transition metal‐based electrocatalysts for seawater electrolysis

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Product

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Modulating the Electronic Properties of MoS₂ Nanosheets for Electrochemical Hydrogen Production: A Review

Provoking Metallic 1T Phase Conversion of 2H-MoS₂ via an Effectual Solvothermal Route for Electrocatalytic Water Reduction in Acid

Provoking Metallic 1T Phase Conversion of 2H-MoS₂ via an Effectual Solvothermal Route for Electrocatalytic Water Reduction in Acid