Growth of Highly Active Amorphous RuCu Nanosheets on Cu Nanotubes for the Hydrogen Evolution Reaction in Wide pH Values

Cao, Dong; Wang, Jiayi; Xu, Haoxiang; Cheng, Daojian

doi:10.1002/smll.202000924

Cited by 73 publications

(47 citation statements)

References 33 publications

(31 reference statements)

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“…Experimental and theoretical calculations have confirmed that the introduction of Cu in HER can regulate the electronic structure of Ru-based catalysts, thus the catalyst shows optimal H desorption capacity [ 48 ]. Cheng et al [ 49 ] reported a facile wet chemistry method for in situ growth of amorphous RuCu nanosheets on crystalline Cu nanotubes (3D RuCu NCs). The obtained catalyst only needs 18 and 73 mV to deliver the current density of 10 mA cm −2 for HER in alkaline and neutral media, respectively.…”

Section: Electronic Effect Modulationmentioning

confidence: 99%

Engineering Ruthenium-Based Electrocatalysts for Effective Hydrogen Evolution Reaction

et al. 2021

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The investigation of highly effective, durable, and cost-effective electrocatalysts for the hydrogen evolution reaction (HER) is a prerequisite for the upcoming hydrogen energy society. To establish a new hydrogen energy system and gradually replace the traditional fossil-based energy, electrochemical water-splitting is considered the most promising, environmentally friendly, and efficient way to produce pure hydrogen. Compared with the commonly used platinum (Pt)-based catalysts, ruthenium (Ru) is expected to be a good alternative because of its similar hydrogen bonding energy, lower water decomposition barrier, and considerably lower price. Analyzing and revealing the HER mechanisms, as well as identifying a rational design of Ru-based HER catalysts with desirable activity and stability is indispensable. In this review, the research progress on HER electrocatalysts and the relevant describing parameters for HER performance are briefly introduced. Moreover, four major strategies to improve the performance of Ru-based electrocatalysts, including electronic effect modulation, support engineering, structure design, and maximum utilization (single atom) are discussed. Finally, the challenges, solutions and prospects are highlighted to prompt the practical applications of Ru-based electrocatalysts for HER.

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Section: Electronic Effect Modulationmentioning

confidence: 99%

Engineering Ruthenium-Based Electrocatalysts for Effective Hydrogen Evolution Reaction

et al. 2021

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“…In the nanoalloy catalyzed reaction, the influence of alloy effect can be understood as electronic effect, structure effect (geometric effect), and so on. [ 59 ] Electronic effect refers to the transfer of charge between metals. [ 60 ] When two or more metals form an alloy phase, the transfer of charge between metals with different electronic structures will change the electronic structure and activity of constituent atoms.…”

Section: Catalytic Mechanismmentioning

confidence: 99%

Review on Synthesis and Catalytic Coupling Mechanism of Highly Active Electrocatalysts for Water Splitting

2021

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Hydrogen (H2), derived from electrochemical water splitting, is usually believed to be a promising alternative for fossil energy due to its environmentally friendly and renewable traits. At present, IrO2 and Pt/C are regarded as the state‐of‐the‐art electrocatalysts for oxygen evolution reaction (OER) and hydrogen evolution reaction (HER), respectively, but their poor durability and high cost severely impede the wide applications. Thus, constructing highly active, stable, and low‐cost electrocatalysts for OER and HER is significantly important. Herein, the synthesis methods, construction of active sites, and catalytic coupling mechanisms for water splitting are fully summarized. In particular, the alloy effect, interface effect, various defects, and doping effects in electrocatalysts are the main reasons to improve the intrinsic catalytic activities. Finally, the future development trend of electrochemical catalysts for water splitting is prospected in the conclusion. It is believed that a comprehensive understanding of materials design strategies is provided, which is beneficial to the development of water splitting.

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“…The deliberately manipulated structure dramatically diminishes the energetic barrier and works as catalytically active centers, synergistically improving the overall water splitting. The similar strategy was also adopted to develop crystalline platinum oxide-decorated amorphous cobalt oxide hydroxide nanosheets and amorphous RuCu nanosheets grown on crystalline Cu nanotubes as HER catalysts [46,73]. Besides, enhanced catalytic effect by compositing hetero phases can be achieved by assembling amorphous nanosheets with nanodots [74], carbon nanofibers [75], metal oxide [76][77][78], etc.…”

Section: Water Splittingmentioning

confidence: 99%

Manipulation on Two-Dimensional Amorphous Nanomaterials for Enhanced Electrochemical Energy Storage and Conversion

et al. 2021

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Low-carbon society is calling for advanced electrochemical energy storage and conversion systems and techniques, in which functional electrode materials are a core factor. As a new member of the material family, two-dimensional amorphous nanomaterials (2D ANMs) are booming gradually and show promising application prospects in electrochemical fields for extended specific surface area, abundant active sites, tunable electron states, and faster ion transport capacity. Specifically, their flexible structures provide significant adjustment room that allows readily and desirable modification. Recent advances have witnessed omnifarious manipulation means on 2D ANMs for enhanced electrochemical performance. Here, this review is devoted to collecting and summarizing the manipulation strategies of 2D ANMs in terms of component interaction and geometric configuration design, expecting to promote the controllable development of such a new class of nanomaterial. Our view covers the 2D ANMs applied in electrochemical fields, including battery, supercapacitor, and electrocatalysis, meanwhile we also clarify the relationship between manipulation manner and beneficial effect on electrochemical properties. Finally, we conclude the review with our personal insights and provide an outlook for more effective manipulation ways on functional and practical 2D ANMs.

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Growth of Highly Active Amorphous RuCu Nanosheets on Cu Nanotubes for the Hydrogen Evolution Reaction in Wide pH Values

Cited by 73 publications

References 33 publications

Engineering Ruthenium-Based Electrocatalysts for Effective Hydrogen Evolution Reaction

Engineering Ruthenium-Based Electrocatalysts for Effective Hydrogen Evolution Reaction

Review on Synthesis and Catalytic Coupling Mechanism of Highly Active Electrocatalysts for Water Splitting

Manipulation on Two-Dimensional Amorphous Nanomaterials for Enhanced Electrochemical Energy Storage and Conversion

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