Highly efficient and durable MoNiNC catalyst for hydrogen evolution reaction

Wang, Fanan; Sun, Yuanmiao; He, Yanghua; Liu, Linghui; Xu, Jinming; Zhao, Xiaochen; Yin, Guomao; Zhang, Liping; Li, Shuzhou; Mao, Qing; Huang, Yanqiang; Zhang, Tao; Liu, Bin

doi:10.1016/j.nanoen.2017.04.050

Cited by 80 publications

(47 citation statements)

References 38 publications

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“…As shown in Figure 2A, the XPS spectrum of N@Mo 2 C-3 indicated the presence of Mo, C, and N elements. [44][45][46][47] The peaks at 231.3 and 228.1 eV are attributed to MoC bond from Mo 2 C. [21,49] The peaks located at higher binding energy correspond to Mo 6+ (235.5 and 232.5 eV) and Mo 4+ (233.0 and 229.9 eV), which can be assigned to MoO 3 and MoO 2 possibly from the surface oxidation of Mo species, which is commonly present in the other Mo catalysts. The peaks located at 232.0 and 228.7 eV verify the formation of MoN species.…”

Section: Fine Tuning Electronic Structures Of Catalystsmentioning

confidence: 99%

“…[43] However, nitrogen-doping (N-doping) often intermixes into carbon matrix rather than intercalating into Mo 2 C active sites, [16,[44][45][46][47][48] and thus how to construct a controllable N-doping into Mo 2 C activation site still remains a great challenge. [21,49] Additionally, other An efficient, durable, and low-cost hydrogen evolution reaction (HER) catalyst is an essential requirement for practical hydrogen production. [21,49] Additionally, other An efficient, durable, and low-cost hydrogen evolution reaction (HER) catalyst is an essential requirement for practical hydrogen production.…”

Section: Introductionmentioning

confidence: 99%

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Fine Tuning Electronic Structure of Catalysts through Atomic Engineering for Enhanced Hydrogen Evolution

Huang

et al. 2018

Advanced Energy Materials

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An efficient, durable, and low‐cost hydrogen evolution reaction (HER) catalyst is an essential requirement for practical hydrogen production. Herein, an effective approach to facilitate the HER kinetics of molybdenum carbide (Mo2C) electrocatalysts is presented by tuning its electronic structure through atomic engineering of nitrogen implantation. Starting from the organoimido‐derivatized polyoxometalate nanoclusters with inherent MoN bonds, the formation of N‐implanted Mo2C (N@Mo2C) nanocrystals with perfectly adjustable amounts of N atoms is demonstrated. The optimized N@Mo2C electrocatalyst exhibits remarkable HER performance and good stability over 20 h in both acid and basic electrolytes. Further density functional theory calculations show that engineering suitable nitrogen atoms into Mo2C can regulate its electronic structure well and decrease MoH strength, leading to a great enhancement of the HER activity. It could be believed that this ligand‐controlled atomic engineering strategy might influence the overall catalyst design strategy for engineering the activation sites of nonprecious metal catalysts for energy conversions.

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Section: Fine Tuning Electronic Structures Of Catalystsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Fine Tuning Electronic Structure of Catalysts through Atomic Engineering for Enhanced Hydrogen Evolution

Huang

et al. 2018

Advanced Energy Materials

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“…We then performed the first‐principle density function theory (DFT) calculations to demonstrate such synergistic and interfacial effects for the high electrocatalytic HER. Figure a illustrates hydrogen adsorbed models at the hollow sites of WN (upper) and W 2 C (down) which have been demonstrated to be the most HER‐active in the previous studies . For WCN, three preferable sites (W, N, C sites) at the interfaces can be recommended as hydrogen adsorbed sites (Figure b).…”

Section: Resultsmentioning

confidence: 92%

Twinned Tungsten Carbonitride Nanocrystals Boost Hydrogen Evolution Activity and Stability

Kou

Wang

et al. 2019

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Synergistic integration of two active metal‐based compounds can lead to much higher electrocatalytic activity than either of the two individually, due to the interfacial effects. Herein, a proof‐of‐concept strategy is creatively developed for the successful fabrication of twinned tungsten carbonitride (WCN) nanocrystals, where W2C and WN are chemically bonded at the molecule level. High‐angle annular dark‐field scanning transmission electron microscopy (HAADF‐STEM) and X‐ray absorption fine structure (XAFS) spectroscopy analyses demonstrate that the intergrowth of W2C and WN in the WCN nanocrystals produces abundant N–W–C interfaces, leading to a significant enhancement in catalytic activity and stability for hydrogen evolution reaction (HER). Indeed, it shows 14.2 times higher and 140 mV lower in the respective turn‐over frequency (TOF) and overpotential at 10 mA cm−2 compared to W2C alone. To complement the experimental observation, the theoretical calculations demonstrate that the WCN endows more favorable hydrogen evolution reaction than the single W2C or WN crystals due to abundant interfaces, beneficial electronic states, lower work function, and more active W sites at the N–W–C interfaces.

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“…DFT calculations further revealed the synergistic effects of V, P co‐doping, which is represented by the reduced kinetic energy barrier for the rate‐limiting step in HER and the optimized H 2 desorption (Figure c). A quaternary molybdenum‐nickel bimetallic carbonitride (Figure d) was also reported as active HER catalysts . The introduction of Ni and N dopant could afford the gradually optimized ΔG H from −0.48 eV to 0.05 eV and thus the superior HER performance with the required overpotential of −150 mV for 50 mA cm −2 (Figure e and 8 f–8j).…”

Section: Transition‐metal‐based Multivariate Compounds For Hermentioning

confidence: 99%

Chemical Doped Ternary and Quaternary Transition‐Metal‐Based Electrocatalysts for Hydrogen Evolution Reaction

Zhang

Zang

et al. 2019

ChemCatChem

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Electrocatalytic hydrogen evolution reaction (HER) through transition‐metal‐based (TMB) catalysts represents a totally sustainable and cost‐effective technology for practical hydrogen (H2) production with high purity. Unfortunately, most of the catalysts have the unsuitable hydrogen adsorption behavior and thereby insufficient H2 generation efficiency. The general strategy to address the problem is to introduce various cation or/and anion dopants for designing multivariate TMB catalysts, which comes down to the optimized electronic structures and thus hydrogen adsorption of surface active sites. In this minireview, we summarize the recent significant advances in multivariate TMB catalysts for HER, especially highlighting the contributions of various dopants as the modulator for the host materials. Finally, the remaining challenges and future perspectives on multivariate TMB catalysts for HER are also discussed.

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Highly efficient and durable MoNiNC catalyst for hydrogen evolution reaction

Cited by 80 publications

References 38 publications

Fine Tuning Electronic Structure of Catalysts through Atomic Engineering for Enhanced Hydrogen Evolution

Fine Tuning Electronic Structure of Catalysts through Atomic Engineering for Enhanced Hydrogen Evolution

Twinned Tungsten Carbonitride Nanocrystals Boost Hydrogen Evolution Activity and Stability

Chemical Doped Ternary and Quaternary Transition‐Metal‐Based Electrocatalysts for Hydrogen Evolution Reaction

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