An in-plane Co9S8@MoS2 heterostructure for the hydrogen evolution reaction in alkaline media

Diao, Lechen; Zhang, Biao; Sun, Qiaozhi; Wang, Ning; Zhao, Naiqin; Shi, Chunsheng; Liu, Enzuo; He, Chunnian

doi:10.1039/c9nr06609h

Cited by 47 publications

(28 citation statements)

References 47 publications

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“…A similar change of slope is also observed in the case of polycrystalline silver [17] and may indicate a change in HER mechanism [15]. In the case of Au surfaces, the catalytic activity follows a different sequence compared to Pt: Au(111) > Au(100) > Au (110) (Table 1), while the Tafel slope varies gradually from about −60 mV dec −1 at low overpotentials to −120 mV dec −1 at high overpotentials (in about the same Since the highest |j 00 | is exhibited by Pt, atomic-scale studies of HER rate dependence on the Pt single crystal surfaces' atomic-scale morphology have been in the research focus for years. Marković et al [14] have first demonstrated that HER in acid solutions is a surface-sensitive process, i.e., that its rate depends on the Pt crystal orientation, as can be clearly seen in Figure 2, left.…”

Section: Her At Single Crystal Surfaces and Bulk Surfacessupporting

confidence: 67%

“…A similar change of slope is also observed in the case of polycrystalline silver [17] and may indicate a change in HER mechanism [15]. In the case of Au surfaces, the catalytic activity follows a different sequence compared to Pt: Au(111) > Au(100) > Au (110) (Table 1), while the Tafel slope varies gradually from about −60 mV dec −1 at low overpotentials to −120 mV dec −1 at high overpotentials (in about the same The dependency of the HER rate on the crystallographic orientation of the electrode was also demonstrated for the case of silver [15] and gold [16] in acid solutions. While the Tafel plots for Ag (111) were found to be linear, in the case of Ag(110) they exhibit a distinct slope change.…”

Section: Her At Single Crystal Surfaces and Bulk Surfacessupporting

confidence: 67%

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Hydrogen Evolution Reaction-From Single Crystal to Single Atom Catalysts

et al. 2020

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Hydrogen evolution reaction (HER) is one of the most important reactions in electrochemistry. This is not only because it is the simplest way to produce high purity hydrogen and the fact that it is the side reaction in many other technologies. HER actually shaped current electrochemistry because it was in focus of active research for so many years (and it still is). The number of catalysts investigated for HER is immense, and it is not possible to overview them all. In fact, it seems that the complexity of the field overcomes the complexity of HER. The aim of this review is to point out some of the latest developments in HER catalysis, current directions and some of the missing links between a single crystal, nanosized supported catalysts and recently emerging, single-atom catalysts for HER.

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Section: Her At Single Crystal Surfaces and Bulk Surfacessupporting

confidence: 67%

“…A similar change of slope is also observed in the case of polycrystalline silver [17] and may indicate a change in HER mechanism [15]. In the case of Au surfaces, the catalytic activity follows a different sequence compared to Pt: Au(111) > Au(100) > Au (110) (Table 1), while the Tafel slope varies gradually from about −60 mV dec −1 at low overpotentials to −120 mV dec −1 at high overpotentials (in about the same The dependency of the HER rate on the crystallographic orientation of the electrode was also demonstrated for the case of silver [15] and gold [16] in acid solutions. While the Tafel plots for Ag (111) were found to be linear, in the case of Ag(110) they exhibit a distinct slope change.…”

Section: Her At Single Crystal Surfaces and Bulk Surfacessupporting

confidence: 67%

Hydrogen Evolution Reaction-From Single Crystal to Single Atom Catalysts

et al. 2020

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“…In addition, Fig. S9 shows that the Tafel slope of NiBi/GDY was 156.1 mV dec −1 , lower than that of NiBi (298.0 mV dec −1 ), demonstrating that the Volmer step was rate-determining and that rapid HER kinetics were realized in NiBi/GDY by accelerating the Volmer reaction [42]. The excellent HER performance of NiBi/GDY was possibly due to the strong coupling between NiBi and GDY, the latter of which significantly improves the conductivity of NiBi/GDY.…”

Section: Resultsmentioning

confidence: 96%

In situ synthesis of a nickel boron oxide/graphdiyne hybrid for enhanced photo/electrocatalytic H2 evolution

Yin

Luo

Tang

et al. 2021

Chinese Journal of Catalysis

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“…Other works focused on preparation of HER active chalcogenides and hydroxides include Ni-Co sulfide/Ni-Co carbonate-hydroxide grown on Ni foam [95], MoS2@Ni(OH)2/Ni foam [96], Co9S8@MoS2 [97], Te@NiTe2/NiS [98], MoS2 coated Ni3S2 [99], WS2 supported on TiO2 [100], N-doped reduced graphene oxide supported CoSe2 [101], Co9S8 supported on N,S co-doped carbon [102], MoNiS@NiS [103], Mo-incorporated Ni(OH)2 [104], Ni2P-NiSe2 [105], NiCo2S4/CdO [106], Ni3S2 decorated by Ni3Sn2S2 quantum dots [107], metallic WSe2:Sn supported on reduced graphene oxide [108], and RuO2/Co3O4-RuCo supported on N-doped carbon [109].…”

Section: Supported Chalcogenides Hydroxides Pnictides and Carbidesmentioning

confidence: 99%

Hydrogen Evolution Reaction - From Single Crystal to Single Atom Catalysts

Gutić¹,

Dobrota²,

Fako³

et al. 2020

Preprint

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Hydrogen evolution reaction (HER) is one of the most important reaction in electrochemistry. This is not only because it is the simplest way to produce high purity hydrogen and the fact that it is the side reaction in many other technologies. HER actually shaped current electrochemistry because it was in focus of active research for so many years (and it still is). The number of catalysts investigated for HER is immense, and it is impossible to overview them all. In fact, it seems that the complexity of the field overcomes the complexity of HER. The aim of this review is to point out some of the latest developments in HER catalysis, current directions and some of the missing links between a single crystal, nanosized supported catalysts and, recently emerging, single atom catalysts for HER.3 of 36 HER at single crystal surfaces and bulk surfacesA crystalline solid can be considered as a series of mutually parallel lattice planes, arranged in a periodic way. Close to the surface, the spatial arrangement of the lattice planes, their crystallographic structure, as well as the dynamics of the constituent atoms may differ from the corresponding features in the bulk [1]. Most clean metals show the tendency to minimize their surface energy. One of the mechanisms is relaxation, the shift of one or more lattice planes located near to the surface, usually perpendicularly to the surface, so that the interlayer distance changes compared to the bulk lattice. The other one is reconstruction -change in equilibrium positions and bonding of surface atoms so that the projection of bulk unit cell to the given surface does not correspond to the surface unit cell. Different crystallographic planes (with different Miller indices) of the same metal exhibit unequal surface densities (number of atoms per surface area), and therefore undergo surface relaxation/reconstruction to different extents [2]. For example, Pt(100) has lower surface density compared to densely packed Pt(111) and therefore has a stronger tendency to relax/reconstruct. Since the main driving force for the mentioned surface modifications is the low coordination number (non-saturation) of surface atoms, it is obvious that atom/molecule adsorption on clean metal surfaces can have a significant effect on its surface structure, inducing relaxation/reconstruction changes. This is of huge importance for HER, as it involves adsorbed atomic hydrogen (Hads) as an intermediate. Additionally, in an electrochemical system, the electrode will be modified by adsorption of "spectator" species (ions/molecules from the electrolyte), so HER will not be taking place on clean metal surfaces, but rather on modified ones. Obviously, there is a complex dynamic interplay between the catalyst surface, reactants, intermediates, and electrolyte.According to the Sabatier principle, the interaction of the reaction reactants/intermediates with the catalyst has to be optimal in strength. If it is too weak, the reactants will not bind to the catalyst and the reaction will not be able to take place. In...

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An in-plane Co₉S₈@MoS₂ heterostructure for the hydrogen evolution reaction in alkaline media

Abstract: MoS2/Co9S8 heterostructures were in situ grown on three-dimensional carbon network substrates with interconnected hierarchical pores, exhibit excellent alkaline HER activity.

Cited by 47 publications

References 47 publications

Hydrogen Evolution Reaction-From Single Crystal to Single Atom Catalysts

Hydrogen Evolution Reaction-From Single Crystal to Single Atom Catalysts

In situ synthesis of a nickel boron oxide/graphdiyne hybrid for enhanced photo/electrocatalytic H2 evolution

Hydrogen Evolution Reaction - From Single Crystal to Single Atom Catalysts

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