Spherical vs. planar: Steering the electronic communication between Ru nanoparticle and single atom to boost the electrocatalytic hydrogen evolution activity both in acid and alkaline

Feng, Yongqiang; Feng, Weihang; Wan, Jing; Chen, Junshen; Wang, Hai; Li, Shumu; Luo, Tianmi; Hu, Yuzhu; Yuan, Chengke; Cao, Liyun; Feng, Liangliang; Li, Jie; Wen, Rui; Huang, Jianfeng

doi:10.1016/j.apcatb.2022.121193

Cited by 51 publications

(28 citation statements)

References 60 publications

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“…6d) reveal the reaction orders of 1.54 and 0.94 for the Pt 1 -NPCNF and Pt 1 -FPCNF catalysts, respectively. According to previous studies, the Pt 1 -NPCNF catalyst may undergo a reaction mechanism correlated with the hydrogen-spillover phenomenon during the HER process [52,53]. The hydrogen-spillover mechanism usually occurs on the composite catalyst with multiple catalytic sites, where hydrogen migrates from the hydrogen-rich component to the hydrogen-poor component for final generation and desorption of H 2 [54,55].…”

Section: Possible Catalytic Mechanismmentioning

confidence: 99%

Atomically dispersed platinum supported onto nanoneedle-shaped protonated polyaniline for efficient hydrogen production in acidic water electrolysis

Bai

Lai

et al. 2023

Sci. China Mater.

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Developing high-performance single-atom platinum (Pt) catalysts for acidic hydrogen evolution reaction (HER) is of significance. However, their HER kinetics are limited due to the low concentration of hydrogen ions (H + ) near the Pt sites in acidic electrolytes, where hydronium ions are undesirably formed with H + surrounded by water molecules. Here, we seek to improve the HER kinetics by anchoring single-atom Pt catalyst on nanoneedle-shaped protonated polyaniline supports, which can not only capture H + from the hydronium ions but also facilitate the electroreduction of H + by promoting the electron accumulation. As a result, the turnover frequency of single-atom Pt supported on the nanoneedle-shaped protonated polyaniline is appreciably enhanced, compared with that of the single-atom Pt supported on the flat-shaped protonated polyaniline. By combining the X-ray photoelectron spectroscopy, finite-element simulation and electrochemical studies, we find that the enhanced HER activity of single-atom Pt on nanoneedle-shaped protonated polyaniline support may arise from a hydrogen spillover pathway induced by the increased local concentration of H + near the Pt sites.

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Section: Possible Catalytic Mechanismmentioning

confidence: 99%

Atomically dispersed platinum supported onto nanoneedle-shaped protonated polyaniline for efficient hydrogen production in acidic water electrolysis

Bai

Lai

et al. 2023

Sci. China Mater.

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“…67 Copyright 2021, Wiley-VCH Verlag GmbH & Co. KGaA; reproduced with permission. 68 Copyright 2022, Elsevier B.V. reduce metal consumption. [71][72][73] Nevertheless, due to its relatively high surface energy, its stability is limited and the active sites are relatively simple.…”

Section: Classification Of Sa/pcsmentioning

confidence: 99%

Research progress on single atom and particle synergistic catalysts for electrocatalytic reactions

Cao

Luo

et al. 2023

Mater. Chem. Front.

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“…As a rule of thumb, ΔG H* is a principal descriptor of HER activity based on the Sabatier principle. [53] A ΔG H* close to zero is desirable, and a negative or positive value leads to overly strong or overly weak adsorption, respectively, of H*. [54] As illustrated in Figure 6f and Figure S8, Supporting Information, one can rationally speculate that both MoSe 2 /Ru SA and MoSe 2 /Ru NC seem to exhibit more favorable ΔG H* values on Se sites than on Ru sites, indicating that the Se sites of MoSe 2 may be the active sites for H* adsorption/desorption (Heyrovsky step).…”

Section: Theoretical Calculationsmentioning

confidence: 99%

Green Electrosynthesis of 5,5′‐Azotetrazolate Energetic Materials Plus Energy‐Efficient Hydrogen Production Using Ruthenium Single‐Atom Catalysts

Zhang

et al. 2022

Advanced Materials

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Water electrolysis involves two parallel reactions, that is, oxygen evolution (OER) and hydrogen evolution (HER), in which sluggish OER is a significant limiting step that results in high energy consumption. Coupling the thermodynamically favorable electrooxidation of organic alternatives to value‐added fine chemicals HER is a promising approach for the simultaneous cost‐effective production of value‐added chemicals and hydrogen. Here, a new coupling system for the green electrochemical synthesis of organic energetic materials (EMs) plus hydrogen production using single‐atom catalysts is introduced. The catalysts are prepared by the facile galvanostatic deposition of ruthenium single atoms on the molybdenum selenide and reveal a low HER overpotential of 38.9 mV at −10 mA cm−2 in an alkaline medium. Importantly, the cell voltage of water electrolysis can be significantly reduced to only 1.35 V at a current of 10 mA cm−2 by coupling water splitting with the electrooxidation of 5‐amino‐1H‐tetrazole to synthesize 5,5′‐azotetrazolate energetic material. These materials are traditionally synthesized under harsh conditions involving a strong oxidizing agent, high‐temperature conditions, and difficult separation of by‐products. This study provides a green and efficient method of synthesizing organic EMs while simultaneously producing hydrogen.

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Spherical vs. planar: Steering the electronic communication between Ru nanoparticle and single atom to boost the electrocatalytic hydrogen evolution activity both in acid and alkaline

Cited by 51 publications

References 60 publications

Atomically dispersed platinum supported onto nanoneedle-shaped protonated polyaniline for efficient hydrogen production in acidic water electrolysis

Atomically dispersed platinum supported onto nanoneedle-shaped protonated polyaniline for efficient hydrogen production in acidic water electrolysis

Research progress on single atom and particle synergistic catalysts for electrocatalytic reactions

Green Electrosynthesis of 5,5′‐Azotetrazolate Energetic Materials Plus Energy‐Efficient Hydrogen Production Using Ruthenium Single‐Atom Catalysts

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