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    Constructing Dense SiO x @Carbon Nanotubes versus Spinel Cathode for Advanced High-Energy Lithium-Ion Batteries

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    Type
    Article
    Authors
    Ming, Hai
    Qiu, Jingyi
    Zhang, Songtong
    Li, Meng
    Zhu, Xiayu
    Wang, Liming
    Ming, Jun cc
    KAUST Department
    Physical Science and Engineering (PSE) Division
    Date
    2017-02-24
    Online Publication Date
    2017-02-24
    Print Publication Date
    2017-05
    Permanent link to this record
    http://hdl.handle.net/10754/623811
    
    Metadata
    Show full item record
    Abstract
    A newly designed dense SiOx@carbon nanotubes (CNTs) composite with a high conductivity of 3.5 S cm−1 and tap density of 1.13 g cm−3 was prepared, in which the CNTs were stripped by physical energy crushing and then coated on SiOx nanoparticles. The composite exhibits high capacities of 835 and 687 mAh g−1 at current densities of 100 and 200 mA g−1, which can be finely persevered over 100 cycles. Benefiting from this promising anode, two new full cells of SiOx@CNTs/LiMn2O4 and SiOx@CNTs/LiNi0.5Mn1.5O4 with high energy densities of 2273 and 2747 Wh kganode−1 (i. e. 413 and 500 Wh kgcathode−1), respectively, were successfully assembled and can cycle more than 400 cycles. Even with further cycling at the elevated temperature of 45 °C, the cells can still deliver relatively high capacities of 568 and 465 mAh ganode−1, respectively, over 100 cycles. Such desired high-energy lithium-ion batteries with working voltages over 4.0 V can be widely developed for diverse applications (e. g. in handheld devices, electric vehicles, and hybrid electric vehicles). The easy extension of the presented synthetic strategy and the configuration of high-energy battery system would be significant in materials synthesis and energy-storage devices.
    Citation
    Ming H, Qiu J, Zhang S, Li M, Zhu X, et al. (2017) Constructing Dense SiO x @Carbon Nanotubes versus Spinel Cathode for Advanced High-Energy Lithium-Ion Batteries. ChemElectroChem 4: 1165–1171. Available: http://dx.doi.org/10.1002/celc.201700061.
    Sponsors
    The work was supported by the Chinese People′s Liberation Army.
    Publisher
    Wiley
    Journal
    ChemElectroChem
    DOI
    10.1002/celc.201700061
    Additional Links
    http://onlinelibrary.wiley.com/doi/10.1002/celc.201700061/full
    ae974a485f413a2113503eed53cd6c53
    10.1002/celc.201700061
    Scopus Count
    Collections
    Articles; Physical Science and Engineering (PSE) Division

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