Electrochemistry of Nanostructured Layered Transition-Metal Dichalcogenides

Chia, Xinyi; Eng, Alex Yong Sheng; Ambrosi, Adriano; Tan, Shu Min; Pumera, Martin

doi:10.1021/acs.chemrev.5b00287

Cited by 758 publications

(552 citation statements)

References 130 publications

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“…Several excellent review articles have been published to highlight the significant progress in these areas. [32][33][34][35][36][37] Interlayer spacing is another important parameter of MX 2 , which has not been fully exploited as an important knob for tuning properties of MX 2 . Interlayer spacings of bulk MX 2 (0.615 nm for MoS 2 , 0.646 nm for MoSe 2 , 0.618 nm for WS 2 , 0.651 nm for WSe 2 , 0.569 nm for TiS 2 , 0.573 nm for VS 2 , 0.589 nm for SnS 2 , and 0.601 nm for TaS 2 ) are much larger than that of graphite (0.335 nm).…”

Section: Introductionmentioning

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: Introductionmentioning

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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“…The most efficient catalysts for the electrochemical hydrogen evolution reaction (HER) are rare and expensive noble metals such as Pt, with the electricity optionally delivered from solar cells [5]. In contrast, atomically thin, two-dimensional semiconducting transition metal dichalcogenides (TMDs), such as MoS 2 , offer the unique combination of a band gap in the visible range of about 1.9 eV for monolayers [6][7][8], high sunlight absorption of up to 15% [9][10][11], catalytically active sites for HER [4,[12][13][14][15][16] or CO 2 -reduction [17] and photocatalytic stability under harsh reaction conditions [18]. Moreover, semiconducting TMDs are earth abundant, inexpensive, and sustainable (photo-)catalysts which can be combined in lateral or vertical heterostructures [19][20][21][22].…”

Section: Introductionmentioning

confidence: 99%

“…Parameters (1)(2)(3) are reasonably well fulfilled in TMDs and their heterostructures. Moreover, it was demonstrated that 2H-MoS 2 features catalytic active edge sites for HER along the (10-10)-direction [32], while the (11)(12)(13)(14)(15)(16)(17)(18)(19)(20)-direction undergoes an anodic corrosion limiting the functionalization as a photo-anode for the oxygen evolution reaction (OER) [32]. The two-dimensional character of TMDs further offers opportunities for structural and defect engineering to locally increase the catalytic activity and to create anchoring sites for co-catalysis.…”

Section: Introductionmentioning

confidence: 99%

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Hydrogen evolution activity of individual mono-, bi-, and few-layer MoS 2 towards photocatalysis

Parzinger

Mitterreiter

Stelzer

et al. 2017

Applied Materials Today

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b s t r a c tWe investigate the hydrogen evolution activity in the dark and under illumination above the band gap of individual mono-, bi-and few-layer (bulk) MoS 2 flakes. We demonstrate that the electrocatalytic activity of 2H-MoS 2 immersed in 1 M H 2 SO 4 increases with decreasing number of layers. For monolayers, we observe the highest exchange current density, which is one magnitude larger than in the bulk case. The onset potential scales with the number of layers, which is consistent with a previous report, suggesting that hopping transport across inter-layer barriers within the MoS 2 flakes is responsible for this scaling.A specially designed micro-sized catalytic cell enables us to investigate individual MoS 2 flakes with well-known geometry and edge-to-surface ratio. Taking these geometric parameters into account, we tentatively attribute the catalytic activity mainly to sulfur vacancies in the basal planes acting as active sites. The associated turn over frequencies (TOF) for mono-and bi-layer MoS 2 yield values higher than 10 3 s −1 at an overpotential of −0.2 V vs. RHE. In view of light driven hydrogen evolution as a means of solar energy conversion, we investigate the photocatalytic activity of few-layer MoS 2 under white light illumination.

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“…Recent studies have identified molybdenum sulfides (MoS x ) as promising catalysts for highly active hydrogen evolution reaction (HER) in acid solutions 2, 3, 4. For example, MoS 2 , a typical inexpensive alternative for Pt, has attracted a great deal of attention 5.…”

Section: Introductionmentioning

confidence: 99%

A Flexible Platform Containing Graphene Mesoporous Structure and Carbon Nanotube for Hydrogen Evolution

Zhang

et al. 2016

Advanced Science

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It is of great significance to design a platform with large surface area and high electrical conductivity for poorly conductive catalyst for hydrogen evolution reaction (HER), such as molybdenum sulfide (MoSx), a promising and cost‐effective nonprecious material. Here, the design and preparation of a free‐standing and tunable graphene mesoporous structure/single‐walled carbon nanotube (GMS/SWCNT) hybrid membrane is reported. Amorphous MoSx is electrodeposited on this platform through a wet chemical process under mild temperature. For MoSx@GMS/SWCNT hybrid electrode with a low catalyst loading of 32 μg cm−2, the onset potential is near 113 mV versus reversible hydrogen electrode (RHE) and a high current density of ≈71 mA cm−2 is achieved at 250 mV versus RHE. The excellent HER performance can be attributed to the large surface area for MoSx deposition, as well as the efficient electron transport and abundant active sites on the amorphous MoSx surface. This novel catalyst is found to outperform most previously reported MoSx‐based HER catalysts. Moreover, the flexibility of the electrode facilitates its stable catalytic performance even in extremely distorted states.

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Electrochemistry of Nanostructured Layered Transition-Metal Dichalcogenides

Cited by 758 publications

References 130 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

Hydrogen evolution activity of individual mono-, bi-, and few-layer MoS 2 towards photocatalysis

A Flexible Platform Containing Graphene Mesoporous Structure and Carbon Nanotube for Hydrogen Evolution

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