A three-dimensional and porous bi-nanospheres electrocatalytic system constructed by in situ generation of Ru nanoclusters inside and outside polydopamine nanoparticles for highly efficient hydrogen evolution reaction

Cai, Jiejin; Chen, Tao; Cui, Liang; Jia, Qiang; Liu, Maosheng; Zheng, Rongkun; Yan, Guowen; Wei, Di; Liu, Jingquan

doi:10.1016/j.ijhydene.2020.01.020

Cited by 24 publications

(13 citation statements)

References 52 publications

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“…The HRTEM images (Figure S2e and f) revealed that the lattice fringe spacing is 0.212 nm, which corresponds to d ‐values for the (002) crystallographic plane of Ru. This result confirms that the metallic Ru formed during the hydrothermal process through the reduction of Ru 3+ by PDA [26,32] . On the other hand, there is no clear fringes belonging to RuO 2 , which may indicate the amorphous phase for RuO 2 ⋅ n (H 2 O).…”

Section: Resultssupporting

confidence: 72%

“…Based on these results, the HER activity can be improved after calcination, attributing to close contact of the bi‐components Ru and RuO 2 , which could accelerate dissociation step of water at the Ru−RuO 2 interfaces. Besides, the N‐doped carbon can also promote the electron transfer between the metal NPs and N‐doped carbon, which facilitates the HER performance [26,32] …”

Section: Resultsmentioning

confidence: 99%

“…Firstly, a fast self‐polymerization of dopamine resulted in PDA coating on the surface of NF (Figure S1), which supplied moderate reducibility to achieve simultaneouslyreduction‐hydrolysis reactions in one step [27,30,31] . Subsequently, a gradual reduction of Ru 3+ to Ru 0 by PDA occurred during the hydrothermal stage [26,32] . Such conditions also induced the partial hydrolysis of Ru 3+ to form RuO 2 ⋅ n (H 2 O) [33–35] .…”

Section: Resultsmentioning

confidence: 99%

“…This result confirms that the metallic Ru formed during the hydrothermal process through the reduction of Ru 3 + by PDA. [26,32] On the other hand, there is no clear fringes belonging to RuO 2 , which may indicate the amorphous phase for RuO 2 • n(H 2 O). FT-IR of RuÀ RuO 2 • n(H 2 O)/PDA/NF in Figure S1 was applied to further determine the existence of amorphous RuO 2 .…”

Section: Simultaneous Generation Of Ruà Ruo 2 Hybrid On Pda-coated Su...mentioning

confidence: 97%

“…[27,30,31] Subsequently, a gradual reduction of Ru 3 + to Ru 0 by PDA occurred during the hydrothermal stage. [26,32] Such conditions also induced the partial hydrolysis of Ru 3…”

Section: Simultaneous Generation Of Ruà Ruo 2 Hybrid On Pda-coated Su...mentioning

confidence: 99%

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Ru−RuO₂ Nanoparticles Decorated on Various Substrates via Reduction‐Hydrolysis Strategy for Boosting Overall Water‐Splitting Performance

Zhou

Sun

et al. 2022

ChemCatChem

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Engineering bifunctional nanocomposites with pronounced interfacial structure represents an effective design strategy for water‐splitting catalysts. Herein, a facile reduction‐hydrolysis method is described for the fabrication of Ru−RuO2 hybrid nanocomposites on various substrates [Ni foam (NF), carbon nanotubes (CNT) and graphene oxide (GO)] as overall water‐splitting catalysts. Polydopamine (PDA) is the key element for simultaneously fabricating the Ru−RuO2 hybrids as a moderate reductant by controlling the reduction rate. In the synthesis process, a gradual reduction of Ru3+ to Ru0 in the presence of PDA occurred during the hydrolytic process of Ru3+ to form RuO2 ⋅ n(H2O). After calcination, Ru−RuO2 hybrids with tight interfacial contacts and high electrical conductivity exhibited excellent performance for both HER and OER. Especially, Ru−RuO2 hybrids on the NF (Ru−RuO2/NC/NF) achieved outstanding catalytic activity toward HER and OER with overpotential of 24 mV and 223 mV at a current density 10 mA cm−2 in alkaline solution, respectively. This work provides a new method for facile synthesis and engineering of Ru−RuO2 nanoparticles on various substrates for boosting the HER/OER performance.

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Section: Resultssupporting

confidence: 72%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Simultaneous Generation Of Ruà Ruo 2 Hybrid On Pda-coated Su...mentioning

confidence: 97%

“…[27,30,31] Subsequently, a gradual reduction of Ru 3 + to Ru 0 by PDA occurred during the hydrothermal stage. [26,32] Such conditions also induced the partial hydrolysis of Ru 3…”

Section: Simultaneous Generation Of Ruà Ruo 2 Hybrid On Pda-coated Su...mentioning

confidence: 99%

See 3 more Smart Citations

Ru−RuO₂ Nanoparticles Decorated on Various Substrates via Reduction‐Hydrolysis Strategy for Boosting Overall Water‐Splitting Performance

Zhou

Sun

et al. 2022

ChemCatChem

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Polyphenol‐Derived Carbonaceous Frameworks with Multiscale Porosity for High‐Power Electrochemical Applications

Kim,

Jang,

Nam

et al. 2024

Advanced Materials

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With the escalating global demand for electric vehicles and sustainable energy solutions, increasing focus is placed on developing electrochemical systems that offer fast charging and high‐power output, primarily governed by mass transport. Accordingly, porous carbons have emerged as highly promising electrochemically active or supporting materials due to expansive surface areas, tunable pore structures, and superior electrical conductivity, accelerating surface reaction. Yet, while substantial research has been devoted to crafting various porous carbons to increase specific surface areas, the optimal utilization of the surfaces remains underexplored. This review emphasizes the critical role of the fluid dynamics within multiscale porous carbonaceous electrodes, leading to substantially enhanced pore utilization in electrochemical systems. It elaborates on strategies of using sacrificial templates for incorporating meso/macropores into microporous carbon matrix, while exploiting the unique properties of polyphenol moieties such as sustainable carbons derived from biomass, inherent adhesive/cohesive interactions with template materials, and facile complexation capabilities with diverse materials, thereby enabling adaptive structural modulations. Furthermore, it explores how multiscale pore configurations influence pore‐utilization efficiency, demonstrating advantages of incorporating multiscale pores. Finally, synergistic impact on the high‐power electrochemical systems is examined, attributed to improved fluid‐dynamic behavior within the carbonaceous frameworks, providing insights for advancing next‐generation high‐power electrochemical applications.

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Polydopamine Decorated Ru-Ni(OH)2 Nanosheets for Enhanced Performance of Hydrogen Evolution in Alkaline Media

Sun

et al. 2022

Catal Lett

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A three-dimensional and porous bi-nanospheres electrocatalytic system constructed by in situ generation of Ru nanoclusters inside and outside polydopamine nanoparticles for highly efficient hydrogen evolution reaction

Cited by 24 publications

References 52 publications

Ru−RuO₂ Nanoparticles Decorated on Various Substrates via Reduction‐Hydrolysis Strategy for Boosting Overall Water‐Splitting Performance

Ru−RuO₂ Nanoparticles Decorated on Various Substrates via Reduction‐Hydrolysis Strategy for Boosting Overall Water‐Splitting Performance

Polyphenol‐Derived Carbonaceous Frameworks with Multiscale Porosity for High‐Power Electrochemical Applications

Polydopamine Decorated Ru-Ni(OH)2 Nanosheets for Enhanced Performance of Hydrogen Evolution in Alkaline Media

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A three-dimensional and porous bi-nanospheres electrocatalytic system constructed by in situ generation of Ru nanoclusters inside and outside polydopamine nanoparticles for highly efficient hydrogen evolution reaction

Cited by 24 publications

References 52 publications

Ru−RuO2 Nanoparticles Decorated on Various Substrates via Reduction‐Hydrolysis Strategy for Boosting Overall Water‐Splitting Performance

Ru−RuO2 Nanoparticles Decorated on Various Substrates via Reduction‐Hydrolysis Strategy for Boosting Overall Water‐Splitting Performance

Polyphenol‐Derived Carbonaceous Frameworks with Multiscale Porosity for High‐Power Electrochemical Applications

Polydopamine Decorated Ru-Ni(OH)2 Nanosheets for Enhanced Performance of Hydrogen Evolution in Alkaline Media

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Product

Resources

About

Ru−RuO₂ Nanoparticles Decorated on Various Substrates via Reduction‐Hydrolysis Strategy for Boosting Overall Water‐Splitting Performance

Ru−RuO₂ Nanoparticles Decorated on Various Substrates via Reduction‐Hydrolysis Strategy for Boosting Overall Water‐Splitting Performance