Template-assisted synthesis of CuO hollow nanotubes constructed by ultrathin nanosheets for lithium-ion battery applications

Kong, Chuncai; Lü, Wenjing; Zong, Jingui; Pu, Fangzhao; Hu, Xuanxuan; Zhang, Xiaojing; Yang, Zhimao; Wang, Fei; Jin, Huixin

doi:10.1016/j.jallcom.2020.156635

Cited by 35 publications

(14 citation statements)

References 23 publications

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“…The Cu/Cu 2+1 O/CF was synthesized through the previously reported method . Typically, the pretreated CF was cut into 1 × 2 cm 2 pieces and immersed into 20 mL of a H 2 O 2 (15 wt %) solution for 12 h at room temperature.…”

Section: Experimental Sectionmentioning

confidence: 99%

Synergism of Interfaces and Defects: Cu/Oxygen Vacancy-Rich Cu-Mn₃O₄ Heterostructured Ultrathin Nanosheet Arrays for Selective Nitrate Electroreduction to Ammonia

Wang

Mao

Ren

et al. 2021

ACS Appl. Mater. Interfaces

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Achieving high efficiency in nitrate (NO 3 − ) to ammonia (NH 3 ) electrocatalysis requires the exploration of advanced electrocatalysts with a welldesigned composition and architecture. In this work, a facile one-step hydrothermal approach was developed for the construction of novel Cu/oxygen vacancy-rich Cu-Mn 3 O 4 heterostructured ultrathin nanosheet arrays on Cu foam (Cu/Cu-Mn 3 O 4 NSAs/CF). Two-dimensional ultrathin nanosheet arrays could increase the exposure of catalytically active centers, and the heterogeneous nanointerface and oxygen vacancies synergistically improve the nitrate-to-ammonia activity over the active centers. Due to the desirable compositional and structural advantages, the Cu/Cu-Mn 3 O 4 NSAs/CF demonstrated excellent performance for the electrocatalytic nitrate reduction to ammonia with high ammonia selectivity (87.6%) and Faradic efficiency (92.4%).

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Section: Experimental Sectionmentioning

confidence: 99%

Synergism of Interfaces and Defects: Cu/Oxygen Vacancy-Rich Cu-Mn₃O₄ Heterostructured Ultrathin Nanosheet Arrays for Selective Nitrate Electroreduction to Ammonia

Wang

Mao

Ren

et al. 2021

ACS Appl. Mater. Interfaces

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“…[30][31][32][33][34][35][36][37] It not only can effectively buffer the volume variation during charge-discharge processes but increases the contact area between electrode and electrolyte, facilitating the enhancement of Li storage capacity and stability. 38,39 Typically, 1D CuO hollow nanotubes were constructed via a simple wet chemical approach employing Cu nanowires as selfsacrificing templates, as reported by Yang et al 40 It displayed good electrochemical performance with first discharge capacity up to 736 mAh g À1 as well as 75% capacity retention after 160 cycles at the current density of 0.1 A g À1 . Unfortunately, until now, nearly all of the hollow design strategies just can be achieved in low dimensional (such as 0D or 1D) nanostructures, while there are few reports about the monolithic 3D nanosystems with connected hollow patterns due to the great challenge in synthesis and precise control of complex high dimensional nanostructures.…”

Section: Introductionmentioning

confidence: 99%

Monolithic three‐dimensional hollow nanoporous Cu_xO encapsulated mesoporous Cu heterostructures with superior Li storage properties

Yan

Kang

Cheng

et al. 2022

EcoMat

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Drastic volume expansion and low conductivity are critical factors leading to severe capacity decay of transition metal oxides (TMOs) as anodes for lithium‐ion batteries (LIBs). An effective strategy to overcome this challenge is to engineer freestanding 3D hollow architectures integrated with nanostructured metals to boost their structural stability and electrical conductivity simultaneously. Inspired by cowpea configuration beneficial to improve the transport of rich water in arid environment, herein, a novel monolithic 3D hollow nanoporous CuxO encapsulated mesoporous Cu heterostructure (3D‐HNP CuxO@m‐Cu) is delicately designed and fabricated via a simple three‐step approach. Compared to other CuxO‐based electrodes with different structure designs in published reports, the unique 3D‐HNP CuxO@m‐Cu as a binder‐free integrated anode for LIBs shows superior Li storage properties with first reversible capacity of 2.02 mAh cm−2 and good cycling stability with 76.2% capacity retention and 99.9% coulombic efficiency after 200 cycles. This can be largely attributed to the unique 3D nanoporous heterostructure design with a synergistic effect between interconnected hollow CuxO nanotubes with bidirectional mechanical stress buffer and internal mesoporous Cu network with enhanced electrical conductivity. We believe that this work provides a brand‐new strategy for rational design and fabrication of next‐generation high‐performance TMOs‐based anodes toward advanced LIBs.

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“…[27,28] Main strategies such as structure design and compositing with carbon-based materials (graphene and carbon nanotubes) have been proposed. [7,16,24,29,30] For structure design, combination of nanomaterials with morphological design such as sphere, [9,21,[28][29][30][31] sheets, [32,33] wire, [11,24,34] hollow structure, [9,12,35,36] and cubes [25,36,37] has been proved to be an effective way, and can effectively shorten diffusion distance of Li + and buffer the drastic volume change of materials during Li + insertion/ extraction process.…”

Section: Introductionmentioning

confidence: 99%

Self‐Supported CuO In‐Situ‐Grown on Copper Foil as Binder‐Free Anode for Lithium‐Ion Batteries

Liu

Cai

et al. 2022

ChemistrySelect

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Transition metal oxides as anode materials for lithium‐ion batteries (LIBs) possess the advantages of high specific capacity and abundance. However, most reported transition metal oxides based active anode materials were coated on the copper current collector with the addition of inactive polymer binder and conductive agents, resulting in low utilization of active substances. To solve this problem, nanostructured CuO with different morphologies (CuO bunches, CuO nanosheets, CuO nanotubes) were in‐situ grown on the copper current collectors via a simple wet chemical oxidation method. The as‐obtained CuO@Cu foils were used directly as anode for LIBs. CuO nanotubes exhibited excellent electrochemical performance and sustained a reversible discharge specific capacity of 798 mA h g−1 after 60 cycles at 100 mA g−1. At current density of 1000 mA g−1, a high specific capacity of 758 mA h g−1 can be obtained after 200 cycles. The satisfying electrochemical performances of the CuO nanotubes anode indicated that a stable composite structure of CuO@Cu foils was achieved in the binder free electrode. This work demonstrated the feasibility of this binder free strategy in the development of electrode materials for high performance lithium‐ion batteries design.

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Template-assisted synthesis of CuO hollow nanotubes constructed by ultrathin nanosheets for lithium-ion battery applications

Cited by 35 publications

References 23 publications

Synergism of Interfaces and Defects: Cu/Oxygen Vacancy-Rich Cu-Mn₃O₄ Heterostructured Ultrathin Nanosheet Arrays for Selective Nitrate Electroreduction to Ammonia

Synergism of Interfaces and Defects: Cu/Oxygen Vacancy-Rich Cu-Mn₃O₄ Heterostructured Ultrathin Nanosheet Arrays for Selective Nitrate Electroreduction to Ammonia

Monolithic three‐dimensional hollow nanoporous Cu_xO encapsulated mesoporous Cu heterostructures with superior Li storage properties

Self‐Supported CuO In‐Situ‐Grown on Copper Foil as Binder‐Free Anode for Lithium‐Ion Batteries

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Template-assisted synthesis of CuO hollow nanotubes constructed by ultrathin nanosheets for lithium-ion battery applications

Cited by 35 publications

References 23 publications

Synergism of Interfaces and Defects: Cu/Oxygen Vacancy-Rich Cu-Mn3O4 Heterostructured Ultrathin Nanosheet Arrays for Selective Nitrate Electroreduction to Ammonia

Synergism of Interfaces and Defects: Cu/Oxygen Vacancy-Rich Cu-Mn3O4 Heterostructured Ultrathin Nanosheet Arrays for Selective Nitrate Electroreduction to Ammonia

Monolithic three‐dimensional hollow nanoporous CuxO encapsulated mesoporous Cu heterostructures with superior Li storage properties

Self‐Supported CuO In‐Situ‐Grown on Copper Foil as Binder‐Free Anode for Lithium‐Ion Batteries

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Synergism of Interfaces and Defects: Cu/Oxygen Vacancy-Rich Cu-Mn₃O₄ Heterostructured Ultrathin Nanosheet Arrays for Selective Nitrate Electroreduction to Ammonia

Synergism of Interfaces and Defects: Cu/Oxygen Vacancy-Rich Cu-Mn₃O₄ Heterostructured Ultrathin Nanosheet Arrays for Selective Nitrate Electroreduction to Ammonia

Monolithic three‐dimensional hollow nanoporous Cu_xO encapsulated mesoporous Cu heterostructures with superior Li storage properties