Ultrathin MoS2(1–x)Se2x Alloy Nanoflakes For Electrocatalytic Hydrogen Evolution Reaction

Gong, Qiufang; Cheng, Liang; Liu, Changhai; Zhang, Mei; Feng, Qingliang; Ye, Hualin; Zeng, Min; Xie, Liming; Liu, Zhuang; Li, Yanguang

doi:10.1021/cs501970w

Cited by 484 publications

(382 citation statements)

References 44 publications

(110 reference statements)

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“…It is shown that both the Tafel slope and the overpotential at a current density of 10.0 mA cm −2 are dramatically decreased when Se is incorporated. [154] However, all these reports are based on non-expanded MoS 2x Se 2(1−x) nanosheets. Recently, our group synthesize hierarchical nanotubes consisting of interlayerexpanded MoS 2x Se 2(1−x) nanosheets with a tunable composition (0.06 ≤ x ≤ 1) by selenization of MoS 2 precursor nanotubes with an expanded interlayer spacing of 0.99 nm.…”

Section: Applications As Electrocatalysts For Hydrogen Evolution Reacmentioning

confidence: 99%

Interlayer Nanoarchitectonics of Two‐Dimensional Transition‐Metal Dichalcogenides Nanosheets for Energy Storage and Conversion Applications

Zhang

et al. 2017

Advanced Energy Materials

332

253

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Lamellar transition‐metal dichalcogenides (MX2) have promising applications in electrochemical energy storage and conversion devices due to their two‐dimensional structure, ultrathin thickness, large interlayer distance, tunable bandgap, and transformable phase nature. Interlayer engineering of MX2 nanosheets with large specific surface area can modulate their electronic structures and interlayer distance as well as the intercalated foreign species, which is important for optimizing their performance in different devices. In this review, a summary on recent progress of MX2 nanosheets and the significance of their interlayer engineering is presented firstly. Synthesis of interlayer‐expanded MX2 nanosheets with various strategies is then discussed in detail. Emphasis is focused on their applications in rechargeable batteries, pseudocapacitors, hydrogen evolution reaction (HER) catalysis and treatments of environmental contaminants, demonstrating the importance of interlayer engineering on controlling performance of MX2. The current challenges of the interlayer‐expanded MX2 and outlooks for further advances are finally discussed.

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Section: Applications As Electrocatalysts For Hydrogen Evolution Reacmentioning

confidence: 99%

Interlayer Nanoarchitectonics of Two‐Dimensional Transition‐Metal Dichalcogenides Nanosheets for Energy Storage and Conversion Applications

Zhang

et al. 2017

Advanced Energy Materials

332

253

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“…Another efficient way to enhance the HER performance of MoS2 is to form MoS2-based alloys [69][70][71][72][73]. Our group synthesized monolayer MoS2(1−x)Se2x alloys and MoS2(1−x)Se2x nanobelt alloys via a CVD method by using MoO3, S powder, and Se powder as reactants [69,73].…”

Section: Catalytic Performance In Alloy Structuresmentioning

confidence: 99%

Two-Dimensional Material Molybdenum Disulfides as Electrocatalysts for Hydrogen Evolution

Yang

Liu

et al. 2017

Catalysts

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Abstract:Recently, transition metal dichalcogenides (TMDs), represented by MoS 2 , have been proven to be a fascinating new class of electrocatalysts in hydrogen evolution reaction (HER). The rich chemical activities, combined with several strategies to regulate its morphologies and electronic properties, make MoS 2 very attractive for understanding the fundamentals of electrocatalysis. In this review, recent developments in using MoS 2 as electrocatalysts for the HER with high activity are presented. The effects of edges on HER activities of MoS 2 are briefly discussed. Then we demonstrate strategies to further enhance the catalytic performance of MoS 2 by improving its conductivity or engineering its structure. Finally, the key challenges to the industrial application of MoS 2 in electrocatalytic hydrogen evolution are also pointed out.

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“…20 Zhou et al prepared ultrathin MoS 2(1−x) Se 2x alloy nanoflakes with monolayer or few-layer thickness, which possessed more active sites than single MoS 2 . 21 Rao et al studied rhenium-doped nanoparticles of MoS 2 with fullerene-like structures (IF-MoS 2 ), that not only changes the intrinsic nature of the MoS 2 but also increases its reactivity. 22 Cationic doping with a small fraction of cobalt or nickel is also used to promote the electrocatalytic performance of MoS 2 .…”

mentioning

confidence: 99%

3D Tungsten-Doped MoS₂Nanostructure: A Low-Cost, Facile Prepared Catalyst for Hydrogen Evolution Reaction

Liang

Mao

et al. 2016

J. Electrochem. Soc.

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Cost effective electrocatalysts for hydrogen evolution reactions are attractive for energy conversion and storage progress. A high performance hydrogen evolution reaction (HER) electrocatalyst of 3D MoS 2 nanostructure modified by tungsten incorporation is produced via hydrothermal method. By means of controllable tungsten incorporation, an optimized catalyst with rich defects was developed, exhibiting high hydrogen evolution activities. In general, the 3D MoS 2 -W3 exhibits an overpotential as low as 200 mV, accompanied with high exchange current density of 6.9 μA cm −2 and excellent stability after 3000 cycles. This work paves a new route in the design of efficient and durable non-precious-metal electrocatalysts for HER in acidic medium. Sustainable hydrogen production has attracted growing attention, and an advanced catalyst for the electrochemical hydrogen evolution reaction (HER) that results in increased efficiency of this important electrochemical process is urgently required.1-3 Although excellent HER performance has been reached for platinum and other precious metals, 4 replacing the expensive and rare catalysts with cost effective and high efficient alternatives still attract scientists' attention toward making the hydrogen production more economic and competitive. [5][6][7] During the past few years, transitional metal sulfides such as nanometer-scaled MoS 2 and WS 2 have attracted considerable attention in HER fields because of their low cost, high chemical stability, and excellent electrocatalytic properties. [8][9][10][11][12][13] Studies concluded that the unsaturated sulfur atoms on the edges of the 2D MoS 2 layers play a crucial role in HER catalysis 14 and the electric conductivity of catalysts is another crucial factor to affect the electrocatalytic activity. [15][16][17] Hence, increasing the number of active sites is an efficient pathway to enhance the HER activity. 18,19 The latest reported results show a new strategy to fabricate a new oxygen-incorporated MoS 2 ultrathin nanosheets catalyst that preferentially exposes active sites by incorporating oxygen atoms.20 Zhou et al. prepared ultrathin MoS 2(1−x) Se 2x alloy nanoflakes with monolayer or few-layer thickness, which possessed more active sites than single MoS 2 .21 Rao et al. studied rhenium-doped nanoparticles of MoS 2 with fullerene-like structures (IF-MoS 2 ), that not only changes the intrinsic nature of the MoS 2 but also increases its reactivity. 22Cationic doping with a small fraction of cobalt or nickel is also used to promote the electrocatalytic performance of MoS 2 . Besides, Ni, Co and Fe were adopted to improve the intrinsic activity, and more highly conductive materials were added to improve the electrical contact, including graphene, carbon nanotubes, carbon nanospheres, and so on. [23][24][25] With respect to the last issue, the structure design of MoS 2 has attracted great attentions to obtain more active sites. 26 Both of WS 2 and MoS 2 are transition-metal sulfides, which have the similar crystal structure. Moreover...

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Ultrathin MoS_2(1–x)Se_2x Alloy Nanoflakes For Electrocatalytic Hydrogen Evolution Reaction

Cited by 484 publications

References 44 publications

Interlayer Nanoarchitectonics of Two‐Dimensional Transition‐Metal Dichalcogenides Nanosheets for Energy Storage and Conversion Applications

Interlayer Nanoarchitectonics of Two‐Dimensional Transition‐Metal Dichalcogenides Nanosheets for Energy Storage and Conversion Applications

Two-Dimensional Material Molybdenum Disulfides as Electrocatalysts for Hydrogen Evolution

3D Tungsten-Doped MoS₂Nanostructure: A Low-Cost, Facile Prepared Catalyst for Hydrogen Evolution Reaction

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Ultrathin MoS2(1–x)Se2x Alloy Nanoflakes For Electrocatalytic Hydrogen Evolution Reaction

Cited by 484 publications

References 44 publications

Interlayer Nanoarchitectonics of Two‐Dimensional Transition‐Metal Dichalcogenides Nanosheets for Energy Storage and Conversion Applications

Interlayer Nanoarchitectonics of Two‐Dimensional Transition‐Metal Dichalcogenides Nanosheets for Energy Storage and Conversion Applications

Two-Dimensional Material Molybdenum Disulfides as Electrocatalysts for Hydrogen Evolution

3D Tungsten-Doped MoS2Nanostructure: A Low-Cost, Facile Prepared Catalyst for Hydrogen Evolution Reaction

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Product

Resources

About

Ultrathin MoS_2(1–x)Se_2x Alloy Nanoflakes For Electrocatalytic Hydrogen Evolution Reaction

3D Tungsten-Doped MoS₂Nanostructure: A Low-Cost, Facile Prepared Catalyst for Hydrogen Evolution Reaction