Ru to W electron donation for boosted HER from acidic to alkaline on Ru/WNO sponges

Meng, Guangyao; Tian, Han; Peng, Licong; Ma, Z.Y.; Chen, Yafeng; Chen, Chang; Chang, Ziwei; Cui, Xiangzhi; Shi, Jianlin

doi:10.1016/j.nanoen.2020.105531

Cited by 103 publications

(49 citation statements)

References 55 publications

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“…The high‐resolution Ru 3p spectra indicate that Ru is composed of mainly metallic states (Ru 0 ) and a certain amount Ru x + . [ 18 ] Thereinto, the Ru x + may belong to oxidized states and Ru‐P. Compared to Ru@C, the Ru 3p binding energy of P,Mo‐Ru@PC shows a positive shift to higher binding energy about 0.4 eV, suggesting Mo and P dual doping could change the geometric lattice of Ru.…”

Section: Resultsmentioning

confidence: 99%

P and Mo Dual Doped Ru Ultrasmall Nanoclusters Embedded in P‐Doped Porous Carbon toward Efficient Hydrogen Evolution Reaction

Jang

Liu

et al. 2022

Advanced Energy Materials

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applications. As a member of platinumgroup metals, ruthenium (Ru) possesses lower prices than Pt, Pd, and Ir and is extensively applied in a lot of industrial reactions. Moreover, its bond strength with hydrogen is similar to that of Pt, making it a promising alternative for catalyzing the HER. [4] Although Ru has potentially superior electrochemical HER activity, its cost, overpotential, and electrochemical durability still need to be improved to realize its wide applications. [4b,c,5] There are generally two strategies to enhance the activity of catalysts: i) improving the intrinsic activity of each active site; ii) increasing the number of active sites. [6] It has been proven that introducing foreign atoms into Ru lattices can regulate the electronic structure to improve the intrinsic activity of Ru-based electrocatalysts. [4b,7] For instance, Li et al. found that the chemical coupling of Ni into Ru could decrease the d-band center of the electrocatalyst, which would induce a relatively moderate binding energy of metal-hydrogen. [7b] Zhao and co-workers demonstrated that the electronic manipulation through P-doping in Ru nanoparticles could realize the electronic manipulation to obtain the optimized ΔG H* toward HER. [7c] The introduction of cheap foreign atoms can also reduce the consumption of precious metals. Furthermore, some studies indicated that the dual doping with heteroatom and transition metal could form multi-active centers and promote an optimal balance for surface chemical states. [8] Although there are rare reports about dual doping on Ru-based catalysts, we believe that the heteroatom and transition metal dual doping into Ru lattices is an effective way to improve their intrinsic activity.In addition, decreasing the particle size has been confirmed as an effective means to increase the number of active sites on a given electrode. [9] To achieve this goal, a strategy of uniformly dispersing and sequestering metal nanoparticles in a 2D carbon structure is often applied. [7a,10] For example, Yang et al. used a sulfur-anchoring method to synthesize Pt-based intermetallic nanoparticles libraries with an average size of about 5 nm on sulfur-doped carbon matrix, exhibiting excellent activities for proton-exchange membrane fuel cells applications. [10] Loading metal nanoparticles on heteroatom doped porous carbon matrix to form heterostructures could not only reduce the consumption of precious metal, but also greatly enhance the stability and alter the local electronic structures at Rational design of efficient hydrogen evolution reaction (HER) electrocatalysts for mass production of hydrogen via electrochemical water splitting is a challenging but pressing task. Herein, an in situ dual doping engineering from phosphomolybdic acid encapsulated within the bimetallic metal-organicframeworks strategy to synthesize P,Mo dual doped Ru ultrasmall nanoparticles embedded in P-doped porous carbon (P,Mo-Ru@PC) for efficient HER is proposed. As a result, P,Mo-Ru@PC achieves a low overpotential of 21 at ...

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Section: Resultsmentioning

confidence: 99%

P and Mo Dual Doped Ru Ultrasmall Nanoclusters Embedded in P‐Doped Porous Carbon toward Efficient Hydrogen Evolution Reaction

Jang

Liu

et al. 2022

Advanced Energy Materials

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“…The first pair peaks with low binding energy located at ≈32.0 and ≈34.1 eV correspond to W–N bond, while another pair peaks with high binding energies of ≈35.4 and ≈37.6 eV are assigned to W–O bond. [ 41,42 ] Especially, the molar ratio of W–O and W–N bonds estimated from the relative area of these fitted subpeaks in W 1 /NO‐C is calculated to be ≈2:1. Also, it's worth noting that obvious peaks corresponding to W–N and W–O bond are observed in the high‐resolution N 1s and O 1s spectra, respectively (Figure 2b,c), which is not found in NO‐C, further verifying that W atoms are coordinated with both O and N atoms.…”

Section: Resultsmentioning

confidence: 99%

High‐Efficiency Electrosynthesis of Hydrogen Peroxide from Oxygen Reduction Enabled by a Tungsten Single Atom Catalyst with Unique Terdentate N₁O₂ Coordination

Zhang

Zhu

Tang

et al. 2021

Adv Funct Materials

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Single-atom catalysts (SACs) have shown great potential in the electrochemical oxygen reduction reaction (ORR) toward hydrogen peroxide (H 2 O 2 ) production. However, current studies are mainly focused on 3d transition-metal SACs, and very little attention has been paid to 5d SACs. Here, a new kind of W SAC anchored on a porous O, N-doped carbon nanosheet (W 1 /NO-C) is designed and prepared via a simple coordination polymer-pyrolysis method. A unique local structure of W SAC, terdentate W 1 N 1 O 2 with the coordination of two O atoms and one N atom, is identified by the combination of aberrationcorrected scanning transmission electron microscopy, X-ray photoelectron spectroscopy and X-ray absorption fine structure spectroscopy. Remarkably, the as-prepared W 1 /NO-C catalyzes the ORR via a 2epathway with high onset potential, high H 2 O 2 selectivity in the wide potential range, and excellent operation durability in 0.1 m KOH solution, superior to most of state-of-the-art H 2 O 2 electrocatalysts ever reported. Theoretical calculations reveal that the C atoms adjacent to O in the W 1 N 1 O 2 -C moiety are the most active sites for the 2e -ORR to H 2 O 2 with the optimal binding energy of the HOO* intermediate. This work opens up a new opportunity for the development of high-performance W-based catalysts for electrochemical H 2 O 2 production.

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“…Among various precious metals, Ru is particularly fascinating, not only due to its relatively low cost (42 $ per oz), but also due to its wide applications as HER and OER catalyst in basic media. [ 65 ] However, very few studies of Ru alloys encapsulated in graphene for HER in basic media have been studied. [ 66 ] Our group reported the synthesis of Ru‐doped Co 3 [Co(CN) 6 ] 2 via an ion‐exchange reaction between Ru and Co ions.…”

Section: M@ng Electrocatalysts With a Small Amount Of Precious Metal In Alloy Corementioning

confidence: 99%

MOFs‐Derived N‐Doped Carbon‐Encapsulated Metal/Alloy Electrocatalysts to Tune the Electronic Structure and Reactivity of Carbon Active Sites^†

Yang

Jiang

et al. 2021

Chin. J. Chem.

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Despite progress over the past few years in developing efficient low‐cost catalysts, precious metals are still the best catalysts for hydrogen evolution reaction (HER), oxygen evolution reaction (OER), and oxygen reduction reaction (ORR). However, the natural scarcity and high cost greatly hamper their large‐scale commercialization. The combination of graphene shell with metal core could tune the electronic structure of carbon active sites. Recently, nitrogen doped graphene encapsulated metal or alloy (M@NG) has emerged as novel and fascinating electrocatalysts. In this review, we focus on some recent advances in designing M@NG electrocatalysts for HER, OER and ORR through tuning electronic structure and activity of carbon active sites. We have summarized some facile and universal strategy for synthesizing various M@NG via direct annealing of metal‐organic frameworks (MOFs). With elaborated MOFs precursor design, careful control over the nitrogen doping level, metal element types and alloy structure, the electronic structure of carbon active sites can be rationally tuned to optimize activity for different electrochemical reactions. We hope this review can provide new insights into the design of M@NG with high catalytic activity.

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Ru to W electron donation for boosted HER from acidic to alkaline on Ru/WNO sponges

Cited by 103 publications

References 55 publications

P and Mo Dual Doped Ru Ultrasmall Nanoclusters Embedded in P‐Doped Porous Carbon toward Efficient Hydrogen Evolution Reaction

P and Mo Dual Doped Ru Ultrasmall Nanoclusters Embedded in P‐Doped Porous Carbon toward Efficient Hydrogen Evolution Reaction

High‐Efficiency Electrosynthesis of Hydrogen Peroxide from Oxygen Reduction Enabled by a Tungsten Single Atom Catalyst with Unique Terdentate N₁O₂ Coordination

MOFs‐Derived N‐Doped Carbon‐Encapsulated Metal/Alloy Electrocatalysts to Tune the Electronic Structure and Reactivity of Carbon Active Sites^†

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Ru to W electron donation for boosted HER from acidic to alkaline on Ru/WNO sponges

Cited by 103 publications

References 55 publications

P and Mo Dual Doped Ru Ultrasmall Nanoclusters Embedded in P‐Doped Porous Carbon toward Efficient Hydrogen Evolution Reaction

P and Mo Dual Doped Ru Ultrasmall Nanoclusters Embedded in P‐Doped Porous Carbon toward Efficient Hydrogen Evolution Reaction

High‐Efficiency Electrosynthesis of Hydrogen Peroxide from Oxygen Reduction Enabled by a Tungsten Single Atom Catalyst with Unique Terdentate N1O2 Coordination

MOFs‐Derived N‐Doped Carbon‐Encapsulated Metal/Alloy Electrocatalysts to Tune the Electronic Structure and Reactivity of Carbon Active Sites†

Contact Info

Product

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About

High‐Efficiency Electrosynthesis of Hydrogen Peroxide from Oxygen Reduction Enabled by a Tungsten Single Atom Catalyst with Unique Terdentate N₁O₂ Coordination

MOFs‐Derived N‐Doped Carbon‐Encapsulated Metal/Alloy Electrocatalysts to Tune the Electronic Structure and Reactivity of Carbon Active Sites^†