Tuning d-band center of tungsten carbide via Mo doping for efficient hydrogen evolution and Zn–H2O cell over a wide pH range

Wang, Lin; Li, Zhongjian; Wang, Kexin; Dai, Qizhou; Lei, Chaojun; Zhang, Qinghua; Lei, Lecheng; Leung, Michael K.H.; Yang, Bin

doi:10.1016/j.nanoen.2020.104850

Cited by 144 publications

(74 citation statements)

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“…As other metallic dopants, Mo element has also a positive effect to enhance the catalytic performance of carbides. Mo‐doped WC has been investigated for HER by forming a core–shell structure with N‐doped carbon shells, which displayed a low overpotential (179 mV at 10 mA cm –2 ) and a small Tafel slope (81 mV dec –1 ) in basic solution [ 63 ] ( Figure a–c). DFT calculations revealed that the Mo doping provides more electrons for catalytic reactions and downshifts the d‐band center of W (Figure 6b).…”

Section: Metallic Heteroatom Doped Non‐noble Metal‐based Electrocatalmentioning

confidence: 99%

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Heteroatom‐Doping of Non‐Noble Metal‐Based Catalysts for Electrocatalytic Hydrogen Evolution: An Electronic Structure Tuning Strategy

et al. 2021

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Electrocatalytic water splitting for hydrogen production is an appealing way to reduce carbon emissions and generate renewable fuels. This promising process, however, is limited by its sluggish reaction kinetics and high‐cost catalysts. Construction of low‐cost and high‐performance non‐noble metal‐based catalysts have been one of the most effective approaches to address these grand challenges. Notably, the electronic structure tuning strategy, which could subtly tailor the electronic states, band structures, and adsorption ability of the catalysts, has become a pivotal way to further enhance the electrochemical water splitting reactions based on non‐noble metal‐based catalysts. Particularly, heteroatom‐doping plays an effective role in regulating the electronic structure and optimizing the intrinsic activity of the catalysts. Nevertheless, the reaction kinetics, and in particular, the functional mechanisms of the hetero‐dopants in catalysts yet remains ambiguous. Herein, the recent progress is comprehensively reviewed in heteroatom doped non‐noble metal‐based electrocatalysts for hydrogen evolution reaction, particularly focus on the electronic tuning effect of hetero‐dopants in the catalysts and the corresponding synthetic pathway, catalytic performance, and activity origin. This review also attempts to establish an intrinsic correlation between the localized electronic structures and the catalytic properties, so as to provide a good reference for developing advanced low‐cost catalysts.

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Section: Metallic Heteroatom Doped Non‐noble Metal‐based Electrocatalmentioning

confidence: 99%

Section: Metallic Heteroatom Doped Non‐noble Metal‐based Electrocatalmentioning

confidence: 99%

Heteroatom‐Doping of Non‐Noble Metal‐Based Catalysts for Electrocatalytic Hydrogen Evolution: An Electronic Structure Tuning Strategy

et al. 2021

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“…[ 1–3 ] Currently, platinum group metals (PGMs) electrocatalysts have been regarded as the most effective HER catalysts, but the scarcity and high cost hinder their widespread applications. [ 4–6 ] As alternatives to PGMs’ electrocatalysts, carbon‐based electrocatalysts with small overpotentials toward HER have aroused a great deal of the researchers’ interest. [ 7–9 ] Impressively, the catalytic activity of carbon‐based catalysts can be improved by transition metal nanoparticles core‐embedded into a heteroatom‐doped carbon matrix (HCM) shell, such as N, P, S or B, which could stimulate charge transfer from carbon atoms to adjacent heteroatoms and modulate the electronic state density of HCM shell to produce new active sites for HER.…”

Section: Introductionmentioning

confidence: 99%

Accurately Regulating the Electronic Structure of Ni_xSe_y@NC Core–Shell Nanohybrids through Controllable Selenization of a Ni‐MOF for pH‐Universal Hydrogen Evolution Reaction

Huang

et al. 2020

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N‐doped carbon‐encapsulated transition metal selenides (TMSs) have garnered increasing attention as promising electrocatalysts for hydrogen evolution reaction (HER). Accurately regulating the electronic structure of these nanohybrids to reveal the underlying mechanism for enhanced HER performances is still challenging and thus requires deep excavation. Herein, a series of pomegranate‐like NixSey@NC core–shell nanohybrids (including Ni0.85Se @ NC, NiSe2@NC, and NiSe@NC) through controllable selenization of a Ni‐MOF precursor is reported. The component of the nanohybrids can be fine‐tuned by tailoring the selenization temperature and feed ratio, through which the electronic structure can be synchronously regulated. Among these nanohybrids, the Ni0.85Se @ NC exhibits the optimum pH‐universal HER performance with overpotentials of 131, 135, and 183 mV in 0.5 m H2SO4, 1.0 m KOH, and 1.0 m PBS, respectively, at 10 mA cm−2, which are attributed to the increased partial density of state at the Fermi level and effective van der Waals interactions between Ni0.85Se and NC matrix explained by density functional theory calculations.

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“…[8][9][10][11] However,t heir large-scale industrial applicationsh ave been limited due to high cost and poor stability. [12,13] Therefore, cost-effective and highly efficient tran-sition metal compounds such as transition metal oxides, [14,15] carbides/nitrides, [16][17][18] sulfides, [19][20][21] and phosphides [22][23][24][25] have attracted ag reat deal of attention for HER.…”

Section: Introductionmentioning

confidence: 99%

Rational Design and Controlled Synthesis of V‐Doped Ni₃S₂/Ni_xP_y Heterostructured Nanosheets for the Hydrogen Evolution Reaction

Wang

Zhao

et al. 2020

Chemistry A European J

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Rational construction of high‐efficiency and low‐cost catalysts is one of the most promising ways to produce hydrogen but remains a huge challenge. Herein, interface engineering and heteroatom doping were used to synthesize V‐doped sulfide/phosphide heterostructures on nickel foam (V‐Ni3S2/NixPy/NF) by phosphating treatment at low temperature. The incorporation of V can adjust the electronic structure of Ni3S2, expose more active sites, and protect the 3D structure of Ni foam from damage. Meanwhile, the heterogeneous interface formed between Ni3S2 and NixPy can provide abundant active sites and accelerate electron transfer. As a result, the V‐Ni3S2/NixPy/NF nanosheet catalyst exhibits outstanding activity in the hydrogen evolution reaction (HER) with an extremely low overpotential of 90 mV at a current density of 10 mA cm−2 and stable durability in alkaline solution, which exceeds those most of the previously reported Ni‐based materials. This work shows that rational design by interfacial engineering and metal‐atom incorporation has a significant influence for efficient hydrogen evolution.

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Tuning d-band center of tungsten carbide via Mo doping for efficient hydrogen evolution and Zn–H2O cell over a wide pH range

Cited by 144 publications

References 45 publications

Heteroatom‐Doping of Non‐Noble Metal‐Based Catalysts for Electrocatalytic Hydrogen Evolution: An Electronic Structure Tuning Strategy

Heteroatom‐Doping of Non‐Noble Metal‐Based Catalysts for Electrocatalytic Hydrogen Evolution: An Electronic Structure Tuning Strategy

Accurately Regulating the Electronic Structure of Ni_xSe_y@NC Core–Shell Nanohybrids through Controllable Selenization of a Ni‐MOF for pH‐Universal Hydrogen Evolution Reaction

Rational Design and Controlled Synthesis of V‐Doped Ni₃S₂/Ni_xP_y Heterostructured Nanosheets for the Hydrogen Evolution Reaction

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Tuning d-band center of tungsten carbide via Mo doping for efficient hydrogen evolution and Zn–H2O cell over a wide pH range

Cited by 144 publications

References 45 publications

Heteroatom‐Doping of Non‐Noble Metal‐Based Catalysts for Electrocatalytic Hydrogen Evolution: An Electronic Structure Tuning Strategy

Heteroatom‐Doping of Non‐Noble Metal‐Based Catalysts for Electrocatalytic Hydrogen Evolution: An Electronic Structure Tuning Strategy

Accurately Regulating the Electronic Structure of NixSey@NC Core–Shell Nanohybrids through Controllable Selenization of a Ni‐MOF for pH‐Universal Hydrogen Evolution Reaction

Rational Design and Controlled Synthesis of V‐Doped Ni3S2/NixPy Heterostructured Nanosheets for the Hydrogen Evolution Reaction

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Product

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Accurately Regulating the Electronic Structure of Ni_xSe_y@NC Core–Shell Nanohybrids through Controllable Selenization of a Ni‐MOF for pH‐Universal Hydrogen Evolution Reaction

Rational Design and Controlled Synthesis of V‐Doped Ni₃S₂/Ni_xP_y Heterostructured Nanosheets for the Hydrogen Evolution Reaction