Ultrahigh-current-density niobium disulfide catalysts for hydrogen evolution

Yang, Jieun; Mohmad, Abdul Rahman; Wang, Yan; Fullon, Raymond; Song, Xiuju; Zhao, Fang; Bozkurt, İbrahim Halil; Augustin, Mathias; Santos, Elton J. G.; Shin, Hyeon Suk; Zhang, Wenjing; Voiry, Damien; Jeong, Hu Young; Chhowalla, Manish

doi:10.1038/s41563-019-0463-8

Cited by 300 publications

(255 citation statements)

References 42 publications

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“…Layered transition-metal dichalcogenides (TMDs), which have a X-M-X sandwich structure (generalized formula: MX 2 , M = transition metal element; X = S, Se, or Te) in each layer, have attracted extensive attention due to their great potential for applications in energy storage (Chhowalla et al, 2013;Muller et al, 2015;Lin et al, 2019), catalysis (Yan et al, 2014;Yang et al, 2019), electronics (Wang et al, 2012;Lin et al, 2018), photonics (Mak and Shan, 2016;Linhart et al, 2019) etc. Recently, significant progress has been made on TMDs materials for energy storage applications (Han et al, 2018;Yun et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Colloidal Synthesis of NbS2 Nanosheets: From Large-Area Ultrathin Nanosheets to Hierarchical Structures

Wei

Dong

et al. 2020

Front. Chem.

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Layered NbS 2 , a member of group-V transition metal dichalcogenides, was synthesized via a colloidal synthesis method and employed as a negative material for a supercapacitor. The morphologies of NbS 2 can be tuned from ultrathin nanosheets to hierarchical structures through dynamics controls based on growth mechanisms. Electrochemical energy storage measurements present that the ultrathin NbS 2 electrode exhibits the highest rate capability due to having the largest electrochemical surface area and its efficient ion diffusion. Meanwhile, the hierarchical NbS 2 shows the highest specific capacitance at low current densities for small charge transfer resistance, displays 221.4 F g −1 at 1 A g −1 and 117.1 F g −1 at 10 A g −1 , and cycling stability with 78.9% of the initial specific capacitance after 10,000 cycles. The aggregate or stacking of nanosheets can be suppressed effectively by constructing hierarchical structure NbS 2 nanosheets.

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Section: Introductionmentioning

confidence: 99%

Colloidal Synthesis of NbS2 Nanosheets: From Large-Area Ultrathin Nanosheets to Hierarchical Structures

Wei

Dong

et al. 2020

Front. Chem.

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“…[3] However, the challenges of hydrogen evolution reaction (HER) rely on design and synthesis of outstanding electrocatalysts. [4] Although Ptbased catalysts are confirmed to be high active electrocatalyst for HER, [5,6] Pt-free materials including transition metal carbides, [7] sulfides, [8][9][10] and oxide materials [11] are expected to substitute for noble metal as electrocatalysts for water splitting because of their low cost and high abundance in nature.…”

mentioning

confidence: 99%

Mesoporous Carbon Nanotablets Coupled with Mo₂C Nanoparticles: Combining Morphology and Structure to Realize High Activity for Efficient Hydrogen Evolution

Nie

Guo

et al. 2020

ChemistrySelect

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Transition metal carbide such as molybdenum carbide is most potential alternative to Pt catalysts for the hydrogen evolution reaction (HER). A high effective non-noble metal electrocatalyst synthesized by the facile route isurgently needed. Herein, we designed a facile approach to synthesize molybdenum carbide nanocrystal dispersed on hexagonal carbon nanotablets possessing mesoporous structures. The electrocatalytic activities for HER were studied. The results show that as-synthesized molybdenum carbide nanocomposites exhibit a superior HER activity and stability, with an overpotential of 176 mV to drive j = 10 mA cm À 2 in basic solution and a smaller Tafel slope of 52 mV dec À 1 in acidic medium, implying molybdenum carbide hexagonal nanotablets have a promising application as Pt-free electrocatalysts for HER. This strategy also opens a new way to fast synthesize other non-noble metal electrocatalysts for various applications.The excessive exploitation and ongoing depletion of nonrenewable energy sources (such as fossil fuels) have brought environmental problems and energy crisis. As we know, hydro-gen is most suitable to serve as a renewable alternative to fossil fuels in the near future, and more researches highlight on it as a result. [1,2] Among of many methods of hydrogen production, the developments of sustainable and clean route, involving electrocatalytic water splitting, are urgent. [3] However, the challenges of hydrogen evolution reaction (HER) rely on design and synthesis of outstanding electrocatalysts. [4] Although Ptbased catalysts are confirmed to be high active electrocatalyst for HER, [5,6] Pt-free materials including transition metal carbides, [7] sulfides, [8][9][10] and oxide materials [11] are expected to substitute for noble metal as electrocatalysts for water splitting because of their low cost and high abundance in nature.Due to their similarity to the d-band electronic structure, perfect electrical conductivity and excellent hydrogen-adsorption propertiesof Pt, transition metal carbides such as molybdenum carbide (Mo 2 C) have been accepted as the promising and alternative Pt-free catalysts for the involving-hydrogen reaction. [12][13][14][15] Particularly, Mo 2 C hybrids behave as high active in the water splitting-involved reaction. [16][17][18] Recently, the reported works mainly focus on constructing of molybdenum carbide and nanocarbon hybrids to confine the growth of Mo 2 C nanoparticles (NPs), containing octahedrons nanocarbon, [17] nanowires, [19] carbon nanofibers, [20] carbon nanotubes, [21] nanosheets, [22] hollow nanosphere [23] and meshlike carbon nanlayers. [24] The materials' HER electrocatalytic activity has been improved by preventing nanoparticles from aggregation and dispersion of active sites.However, some approaches include complicated process and/or need hydrothermal conditions inevitably before carbonization of Mo-based precursors. As shown in some cases, molybdenum carbide nanocrystals derived from metal-organic frameworks compounds need etching of guest metal...

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“…Mono and few layer TMDC's have been widely studied for their potential use as electrocatalysts for the HER. With recent reports of exceptional HER performance seen in emerging vdW materials 50 .…”

Section: Hydrogen Evolution Reaction (Her)mentioning

confidence: 99%

Heterostructures formed through abraded van der Waals materials

et al. 2020

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To fully exploit van der Waals materials and their vertically stacked heterostructures, new mass-scalable production routes which are low cost but preserve the high electronic and optical quality of the single crystals are required. Here, we demonstrate an approach to realise a variety of functional heterostructures based on van der Waals nanocrystal films produced through the mechanical abrasion of bulk powders. We find significant performance enhancements in abraded heterostructures compared to those fabricated through inkjet printing of nanocrystal dispersions. To highlight the simplicity, applicability and scalability of the device fabrication, we demonstrate a multitude of different functional heterostructures such as resistors, capacitors and photovoltaics. We also demonstrate the creation of energy harvesting devices, such as large area catalytically active coatings for the hydrogen evolution reaction and enhanced triboelectric nanogenerator performance in multilayer films. The ease of device production makes this a promising technological route for up-scalable films and heterostructures.

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Ultrahigh-current-density niobium disulfide catalysts for hydrogen evolution

Cited by 300 publications

References 42 publications

Colloidal Synthesis of NbS2 Nanosheets: From Large-Area Ultrathin Nanosheets to Hierarchical Structures

Colloidal Synthesis of NbS2 Nanosheets: From Large-Area Ultrathin Nanosheets to Hierarchical Structures

Mesoporous Carbon Nanotablets Coupled with Mo₂C Nanoparticles: Combining Morphology and Structure to Realize High Activity for Efficient Hydrogen Evolution

Heterostructures formed through abraded van der Waals materials

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Ultrahigh-current-density niobium disulfide catalysts for hydrogen evolution

Cited by 300 publications

References 42 publications

Colloidal Synthesis of NbS2 Nanosheets: From Large-Area Ultrathin Nanosheets to Hierarchical Structures

Colloidal Synthesis of NbS2 Nanosheets: From Large-Area Ultrathin Nanosheets to Hierarchical Structures

Mesoporous Carbon Nanotablets Coupled with Mo2C Nanoparticles: Combining Morphology and Structure to Realize High Activity for Efficient Hydrogen Evolution

Heterostructures formed through abraded van der Waals materials

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Mesoporous Carbon Nanotablets Coupled with Mo₂C Nanoparticles: Combining Morphology and Structure to Realize High Activity for Efficient Hydrogen Evolution