Facile construction of porous and heterostructured molybdenum nitride/carbide nanobelt arrays for large current hydrogen evolution reaction

Pi, Yuancheng; Song, Hao; Zhang, Xuming; Pi, Chaoran; Qiang, Manting; Wang, Xueling; Wang, Handu; Gao, Biao; Huo, Kaifu

doi:10.1016/j.ijhydene.2022.06.142

Cited by 4 publications

(7 citation statements)

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“…Reproduced with permission. [126] Copyright 2022, Elsevier Ltd. a small reduction in morphology was noticed. The finding suggests numerous valuable methods for increasing the HER utilization of low grade transition metallic electrocatalysts, including the use of a water adsorption/desorption electrode with Ni insertion in this particular case and nanowire-based frameworks with underwater superaerophobic features.…”

Section: Molybdenum Nitride-based Electrocatalysts For Hermentioning

confidence: 96%

“…In addition to that electronic manipulation to increase catalytic operation, designing porous electrocatalyst with uniform topography to reveal extra active surface area while instantaneously designing and building charge carrier and mass transmission mechanisms would always be efficacious in significantly improving catalyst efficiency. Therefore, Yuancheng et al [ 126 ] constructed highly porous 1D Mo 2 N/Mo 2 C heterostructured material with nanobelt‐like topography through normal heat treatment mechanism. The graphitic external carbon walls and internal interacting nitrogen matrix fostered electronic conductivity, and the heterostructure‐like nanobelts with highly permeable fragments ameliorated the interconnection of the obtained nanomaterials to boost widely available active sites and improve charge transfer, according to scientific experiment results.…”

Section: Molybdenum Nitride‐based Electrochemical Applicationmentioning

confidence: 99%

“…The significant degradation test demonstrates that the linear sweep curve has relatively insignificant decomposition upon 2000 charge-discharge cycles in comparison to the preliminary exhibited that the potency continues to stay relatively consistent throughout 34 h at universal current capacity of 10 mA cm À2 these electrical Reproduced with permission. [126] Copyright 2022, Elsevier Ltd.…”

Section: Molybdenum Nitride-based Electrocatalysts For Hermentioning

confidence: 99%

“…Figure 5. a) Polarization curves of Mo 2 N, Mo 2 C, Mo 2 C /Mo 2 N-800 and Pt/C in 1.0 M KOH; b) the comparison of overpotentials at current density of 10, 100, and 500 mA cm À2 ; c) Tafel plots; d) Nyquist plots with inserted diagrams of equivalent electrical circuit; e) polarization curves of Mo 2 C/Mo 2 N-800 before and after chronoamperometric test for 12 h; f ) the comparison of overpotentials at a current density of 500 mA cm À2 of different Mo-based catalysts.Reproduced with permission [126]. Copyright 2022, Elsevier Ltd.…”

mentioning

confidence: 99%

“…Figure 6. a-e) Polarization curves of Mo 2 N, Mo 2 C, Mo 2 C/Mo 2 N-800, and Pt/C in 1.0 M PBS and 0.5 M H 2 SO 4 , respectively; d) Tafel plots; f ) polarization curves of Mo 2 C/Mo 2 N-800 electrocatalyst before and after chronopotentiometry test for 12 h in 1.0 M PBS and 0.5 M H 2SO 4 , respectively; the current density is kept at 10 mA cm À2 . Reproduced with permission [126]. Copyright 2022, Elsevier Ltd.…”

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confidence: 99%

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Factors Effecting and Structural Engineering of Molybdenum Nitride‐Based Electrocatalyst for Overall Water Splitting: A Critical Review

et al. 2023

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The advancement of spotless hydrogen energy generation is being accelerated by the advancement in nonprecious electrocatalysts for effective hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and overall water splitting. In this review, the main focus is given to the most significant innovations in the surface topography, morphological shape, size distribution, and electrocatalytic functionality of highly engineered molybdenum nitride catalysts, equal to or even better than state-of-the-art electrocatalyst for HER and OER. Different morphological or interfacial engineering techniques, such as in situ electrospinning, topochemical methods, and classic chemical methods for synthesizing nonprecious molybdenum nitride electrocatalysts, are extensively covered. Molybdenum nitrides are discovered the excellent electrocatalyst, and the factors that can improve its electrocatalytic properties, such as morphological tuning, controlled geometrical composition, pH effect, hybrid and electronic structures, the effect of temperature, and effects of active sites, are comprehensively discussed.

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Section: Molybdenum Nitride-based Electrocatalysts For Hermentioning

confidence: 96%

Section: Molybdenum Nitride‐based Electrochemical Applicationmentioning

confidence: 99%

Section: Molybdenum Nitride-based Electrocatalysts For Hermentioning

confidence: 99%

mentioning

confidence: 99%

mentioning

confidence: 99%

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Factors Effecting and Structural Engineering of Molybdenum Nitride‐Based Electrocatalyst for Overall Water Splitting: A Critical Review

et al. 2023

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Progress on the Design of Electrocatalysts for Large‐Current Hydrogen Production by Tuning Thermodynamic and Kinetic Factors

Li,

Feng,

Dai

et al. 2024

Adv Funct Materials

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Electrochemical water splitting to produce green hydrogen offers a promising technology for renewable energy conversion and storage, as well as realizing carbon neutrality. The efficiency, stability, and cost of electrocatalysts toward hydrogen evolution reaction (HER) and electrocatalytic overall water splitting (EOWS) at large current densities are essential for practical application. In this review, the key factors that determine the catalytic performance of electrocatalysts at large current densities are summarized from the angel of thermodynamic and kinetic correlation. The corresponding design strategies are presented. The electronic structure and density of active sites that affect the adsorption/desorption of intermediates are considered as the thermodynamic aspects, while charge transfer and mass transport capabilities closely associated with electrode resistance and intermediate diffusion are assigned as kinetic effects. Recent development of bifunctional and integrated electrocatalysts toward EOWS is also discussed in detail. Finally, the perspective and direction on the electrocatalytic water splitting under large current density are proposed. This comprehensive overview will offer profound insights and guidance for the continued advancement of this field.

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Engineering Rich Active Sites and Efficient Water Dissociation for Ni-Doped MoS₂/CoS₂ Hierarchical Structures toward Excellent Alkaline Hydrogen Evolution

et al. 2022

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Besides improving charge transfer, there are two key factors, such as increasing active sites and promoting water dissociation, to be deeply investigated to realize high-performance MoS 2 -based electrocatalysts in alkaline hydrogen evolution reaction (HER). Herein, we have demonstrated the synergistic engineering to realize rich unsaturated sulfur atoms and activated O−H bonds toward the water for Ni-doped MoS 2 /CoS 2 hierarchical structures by an approach to Ni doping coupled with in situ sulfurizing for excellent alkaline HER. In this work, the Ni-doped atoms are evolved into Ni(OH) 2 during alkaline HER. Interestingly, the extra unsaturated sulfur atoms will be modulated into MoS 2 nanosheets by breaking Ni−S bonds during the formation of Ni(OH) 2 . On the other hand, the higher the mass of the Ni precursor (m Ni ) for the fabrication of our samples, the more Ni(OH) 2 is evolved, indicating a stronger ability for water dissociation of our samples during alkaline HER. Our results further reveal that regulating m Ni is crucial to the HER activity of the assynthesized samples. By regulating m Ni to 0.300 g, a balance between increasing active sites and promoting water dissociation is achieved for the Ni-doped MoS 2 /CoS 2 samples to boost alkaline HER. Consequently, the optimal samples present the highest HER activity among all counterparts, accompanied by reliable long-term stability. This work will promise important applications in the field of electrocatalytic hydrogen evolution in alkaline environments.

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Facile construction of porous and heterostructured molybdenum nitride/carbide nanobelt arrays for large current hydrogen evolution reaction

Cited by 4 publications

References 47 publications

Factors Effecting and Structural Engineering of Molybdenum Nitride‐Based Electrocatalyst for Overall Water Splitting: A Critical Review

Factors Effecting and Structural Engineering of Molybdenum Nitride‐Based Electrocatalyst for Overall Water Splitting: A Critical Review

Progress on the Design of Electrocatalysts for Large‐Current Hydrogen Production by Tuning Thermodynamic and Kinetic Factors

Engineering Rich Active Sites and Efficient Water Dissociation for Ni-Doped MoS₂/CoS₂ Hierarchical Structures toward Excellent Alkaline Hydrogen Evolution

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Facile construction of porous and heterostructured molybdenum nitride/carbide nanobelt arrays for large current hydrogen evolution reaction

Cited by 4 publications

References 47 publications

Factors Effecting and Structural Engineering of Molybdenum Nitride‐Based Electrocatalyst for Overall Water Splitting: A Critical Review

Factors Effecting and Structural Engineering of Molybdenum Nitride‐Based Electrocatalyst for Overall Water Splitting: A Critical Review

Progress on the Design of Electrocatalysts for Large‐Current Hydrogen Production by Tuning Thermodynamic and Kinetic Factors

Engineering Rich Active Sites and Efficient Water Dissociation for Ni-Doped MoS2/CoS2 Hierarchical Structures toward Excellent Alkaline Hydrogen Evolution

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Product

Resources

About

Engineering Rich Active Sites and Efficient Water Dissociation for Ni-Doped MoS₂/CoS₂ Hierarchical Structures toward Excellent Alkaline Hydrogen Evolution