Cation Exchange Strategy to Single-Atom Noble-Metal Doped CuO Nanowire Arrays with Ultralow Overpotential for H<sub>2</sub>O Splitting

Xu, Haitao; Liu, Tianyang; Bai, Shuxing; Li, Leigang; Zhu, Yiming; Wang, Juan; Yang, Shize; Li, Yafei; Shao, Qi; Huang, Xiaoqing

doi:10.1021/acs.nanolett.0c02007

Cited by 106 publications

(59 citation statements)

References 38 publications

(45 reference statements)

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“…The results show that the Ru site on SA Ru‐Co 3 O 4 has a more positive charge than that of octahedral Co site on Co 3 O 4 . According to previous reports, the doped metal atoms as electron‐deficient centers can improve the catalytic activity for the oxidation process, [ 52 , 53 , 54 , 55 , 56 , 57 ] which is beneficial to reduce the charging overpotential of the battery. In conclusion, heterogeneous Ru atoms as the active centers not only enhance the CRR process of the battery, optimize the morphology and growth pathway of the discharge products, but also play a positive role in the battery charging process.…”

Section: Resultsmentioning

confidence: 99%

Single‐Atom Ru Implanted on Co₃O₄ Nanosheets as Efficient Dual‐Catalyst for Li‐CO₂ Batteries

Lian

Wang

et al. 2021

Advanced Science

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Li‐CO 2 battery has attracted extensive attention and research due to its super high theoretical energy density and its ability to fix greenhouse gas CO 2 . However, the slow reaction kinetics during discharge/charge seriously limits its development. Hence, a simple cation exchange strategy is developed to introduce Ru atoms onto a Co 3 O 4 nanosheet array grown on carbon cloth (SA Ru‐Co 3 O 4 /CC) to prepare a single atom site catalyst (SASC) and successfully used in Li‐CO 2 battery. Li‐CO 2 batteries based on SA Ru‐Co 3 O 4 /CC cathode exhibit enhanced electrochemical performances including low overpotential, ultra high capacity, and long cycle life. Density functional theory calculations reveal that single atom Ru as the driving force center can significantly enhance the intrinsic affinity for key intermediates, thus enhancing the reaction kinetics of CO 2 reduction reaction in Li‐CO 2 batteries, and ultimately optimizing the growth pathway of discharge products. In addition, the Bader charge analysis indicates that Ru atoms as electron‐deficient centers can enhance the catalytic activity of SA Ru‐Co 3 O 4 /CC cathode for the CO 2 evolution reaction. It is believed that this work has important implications for the development of new SASCs and the design of efficient catalyst for Li‐CO 2 batteries.

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Section: Resultsmentioning

confidence: 99%

Single‐Atom Ru Implanted on Co₃O₄ Nanosheets as Efficient Dual‐Catalyst for Li‐CO₂ Batteries

Lian

Wang

et al. 2021

Advanced Science

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“…After decorating Rh SACs on CuO nanowire arrays, the overpotential distinctly decreased from 323 to 44 mV for alkaline HER 1 m KOH. [ 91 ]…”

Section: Applications Of Single‐atom Catalystsmentioning

confidence: 99%

Synthesis Strategies, Catalytic Applications, and Performance Regulation of Single‐Atom Catalysts

Jung

et al. 2021

Adv Funct Materials

152

106

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The recent dramatic increase in research on isolated metal atoms has received extensive scientific interest in the new frontier of single‐atom catalysis. As newly advanced materials in catalysis, single‐atom catalysts (SACs) have received enormous interest from the perspectives of both scientific research and industrial applications due to their remarkable activity. In addition, other catalytic properties of single metal atoms, including stability and selectivity, can be further improved by tuning their electronic/geometric structures and modulating the metal–support interactions. SACs usually consist of dispersed atoms and appropriate support materials, which are employed to anchor, confine, and/or coordinate with isolated metal atoms. Therefore, the nature of single metal sites allows acquiring a maximum atom utilization approaching 100%, which is of significance, particularly for the development of noble‐metal‐based catalysts. In order to systematically understand the structure–property relationships and the underlying catalytic mechanisms relationship of SACs, the representative scientific research efforts in their synthesis strategies, catalytic applications, and performance regulation are discussed here. Typical single‐atom catalysis processes and the corresponding mechanisms in electrochemistry, photochemistry, organic synthesis, and biomedicine are also summarized. Finally, the challenges and prospects for the development of single‐atom catalysis and SACs are highlighted.

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“…[ 136 ] Recently, tremendous effort has been devoted to explore reasonable electrocatalyst for high‐efficient OWS. [ 137–139 ] According to previous reports, MXene‐based electrocatalysts display excellent HER performance on account of the presence of surface oxygen terminal (O*). [ 140,141 ] However, the sluggish kinetics of OER in pristine MXene with the existence of O* restrains the H 2 generation by water splitting.…”

Section: Electrocatalytic Applicationmentioning

confidence: 99%

MXenes as Superexcellent Support for Confining Single Atom: Properties, Synthesis, and Electrocatalytic Applications

Zhang

Lai

et al. 2021

Small

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Single atom catalysts (SACs) have shown their noticeable potential and gradually become a new favorite in catalytic field due to the particular selectivity, high catalytic performance, and strong durability. The most important factor in the synthesis of SACs is the selection of appropriate support and formation of metal–support interaction. Among a large number of nanomaterials, MXenes can be utilized as benign supports for fixing SACs because of their expansive specific surface area, regulable bandgap, superior electronic conductivity, and strong mechanical stability. The structure and property of MXenes can be manipulated by changing transition metal elements and surface termination. Here, the uniqueness and superiority of MXenes as superexcellent supports for confining SACs are analyzed from structure and property. The synthetic strategy of MXene‐supported SACs is also summarized, especially emphasizing the immobilization of isolated atom against aggregation by utilizing the formidable metal–support covalent coordination interaction. In addition, the applications of MXene‐supported SACs in electrocatalytic field are highlighted, including hydrogen evolution reaction, oxygen evolution reaction, overall water splitting, oxygen reduction reaction, and nitrogen reduction reaction. Finally, the challenges and prospects are pointed out for the further understanding and practical application of MXene‐supported SACs in electrocatalysis.

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Cation Exchange Strategy to Single-Atom Noble-Metal Doped CuO Nanowire Arrays with Ultralow Overpotential for H₂O Splitting

Cited by 106 publications

References 38 publications

Single‐Atom Ru Implanted on Co₃O₄ Nanosheets as Efficient Dual‐Catalyst for Li‐CO₂ Batteries

Single‐Atom Ru Implanted on Co₃O₄ Nanosheets as Efficient Dual‐Catalyst for Li‐CO₂ Batteries

Synthesis Strategies, Catalytic Applications, and Performance Regulation of Single‐Atom Catalysts

MXenes as Superexcellent Support for Confining Single Atom: Properties, Synthesis, and Electrocatalytic Applications

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Cation Exchange Strategy to Single-Atom Noble-Metal Doped CuO Nanowire Arrays with Ultralow Overpotential for H2O Splitting

Cited by 106 publications

References 38 publications

Single‐Atom Ru Implanted on Co3O4 Nanosheets as Efficient Dual‐Catalyst for Li‐CO2 Batteries

Single‐Atom Ru Implanted on Co3O4 Nanosheets as Efficient Dual‐Catalyst for Li‐CO2 Batteries

Synthesis Strategies, Catalytic Applications, and Performance Regulation of Single‐Atom Catalysts

MXenes as Superexcellent Support for Confining Single Atom: Properties, Synthesis, and Electrocatalytic Applications

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Cation Exchange Strategy to Single-Atom Noble-Metal Doped CuO Nanowire Arrays with Ultralow Overpotential for H₂O Splitting

Single‐Atom Ru Implanted on Co₃O₄ Nanosheets as Efficient Dual‐Catalyst for Li‐CO₂ Batteries

Single‐Atom Ru Implanted on Co₃O₄ Nanosheets as Efficient Dual‐Catalyst for Li‐CO₂ Batteries