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    Layered MgxV2O5·nH2O as Cathode Material for High Performance Aqueous Zinc Ion Batteries

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    acsenergylett.8b01423.pdf
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    Type
    Article
    Authors
    Ming, Fangwang cc
    Liang, Hanfeng cc
    Lei, Yongjiu cc
    Kandambeth, Sharath cc
    Eddaoudi, Mohamed cc
    Alshareef, Husam N. cc
    KAUST Department
    Advanced Membranes and Porous Materials Research Center
    Chemical Science Program
    Functional Materials Design, Discovery and Development (FMD3)
    Functional Nanomaterials and Devices Research Group
    Material Science and Engineering Program
    Physical Science and Engineering (PSE) Division
    Date
    2018-09-28
    Online Publication Date
    2018-09-28
    Print Publication Date
    2018-10-12
    Permanent link to this record
    http://hdl.handle.net/10754/628887
    
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    Abstract
    The performance of chemically intercalated V2O5 was found to strongly depend on the interlayer spacing, which is related to the radius of hydrated metal ion, which can be readily tuned by using different intercalated metals. Herein, we report a layered Mg-intercalated V2O5 as cathode material for aqueous ZIBs. The large radius of hydrated Mg2+ (~4.3 Å, compared to 3.8 Å of commonly used Li+) results in an interlayer spacing as large as 13.4 Å (against 11.07 Å for Li+ intercalated V2O5), which allows efficient Zn2+ (de)insertion. As a result, the obtained porous Mg0.34V2O5·0.84H2O nanobelts work in a wide potential window of 0.1-1.8V versus Zn2+/Zn, and can deliver high capacities of 353 and 264 mA h g-1 at current densities of 100 and 1000 mA g-1, respectively, along with long-term durability. Furthermore, the reversible Zn2+ (de)intercalation reaction mechanism is confirmed by multiple characterizations methods.
    Citation
    Ming F, Liang H, Lei Y, Kandambeth S, Eddaoudi M, et al. (2018) Layered MgxV2O5·nH2O as Cathode Material for High-Performance Aqueous Zinc Ion Batteries. ACS Energy Letters: 2602–2609. Available: http://dx.doi.org/10.1021/acsenergylett.8b01423.
    Sponsors
    Fangwang Ming and Hanfeng Liang contributed equally to this work. Research reported in this publication is supported by King Abdullah University of Science and Technology (KAUST).
    Publisher
    American Chemical Society (ACS)
    Journal
    ACS Energy Letters
    DOI
    10.1021/acsenergylett.8b01423
    10.1021/acsenergylett.1c01512
    Additional Links
    https://pubs.acs.org/doi/10.1021/acsenergylett.8b01423
    ae974a485f413a2113503eed53cd6c53
    10.1021/acsenergylett.8b01423
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