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  • Ball-milling synthesis of ZnO@sulphur/carbon nanotubes and Ni(OH)2@sulphur/carbon nanotubes composites for high-performance lithium-sulphur batteries

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    Author(s)
    Gu, Xingxing
    Tong, Chuan-jia
    Wen, Bo
    Liu, Li-min
    Lai, Chao
    Zhang, Shanqing
    Griffith University Author(s)
    Zhang, Shanqing
    Year published
    2016
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    Abstract
    Zinc oxide wrapped sulphur/carbon nanotubes (ZnO@S/CNT) and nickel hydroxide wrapped sulphur/carbon nanotubes (Ni(OH)2@S/CNT) nanocomposites are prepared using a simple, low cost and scalable ball-milling method. As the cathodes in Li-S batteries, the as-prepared ZnO@S/CNT composite illustrates a superior high initial capacity of 1663 mAh g−1 at a charge/discharge rate of 160 mA g−1, and maintains a reversible capacity at approximately 942 mAh g−1 after 70 cycles. While for Ni(OH)2@S/CNT composites, its initial capacity is also as high as 1331 mAh g−1, but a poorer cycling stability is presented. When the charge/discharge ...
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    Zinc oxide wrapped sulphur/carbon nanotubes (ZnO@S/CNT) and nickel hydroxide wrapped sulphur/carbon nanotubes (Ni(OH)2@S/CNT) nanocomposites are prepared using a simple, low cost and scalable ball-milling method. As the cathodes in Li-S batteries, the as-prepared ZnO@S/CNT composite illustrates a superior high initial capacity of 1663 mAh g−1 at a charge/discharge rate of 160 mA g−1, and maintains a reversible capacity at approximately 942 mAh g−1 after 70 cycles. While for Ni(OH)2@S/CNT composites, its initial capacity is also as high as 1331 mAh g−1, but a poorer cycling stability is presented. When the charge/discharge current is increased to 1600 mA g−1, a high reversible capacity of 698 mAh g−1 after 200 cycles still can be obtained for the ZnO@S/CNT composite, far better than that of Ni(OH)2@S/CNT composites. The better cycling performance and high discharge capacity can be attributed to the strong interactions between ZnO and Sx2− species, which is verified by the density functional theory (DFT) calculation result that the ZnO exhibits a higher adsorption energy for Li2S8 than the Ni(OH)2.
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    Journal Title
    Electrochimica Acta
    Volume
    196
    DOI
    https://doi.org/10.1016/j.electacta.2016.03.018
    Copyright Statement
    © 2016, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Licence, which permits unrestricted, non-commercial use, distribution and reproduction in any medium, providing that the work is properly cited.
    Subject
    Physical sciences
    Chemical sciences
    Macromolecular and materials chemistry not elsewhere classified
    Engineering
    Publication URI
    http://hdl.handle.net/10072/99575
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    • Journal articles

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