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    Crumpled nitrogen- and boron-dual-self-doped graphene sheets as an extraordinary active anode material for lithium ion batteries

    Access Status
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    Authors
    Huang, S.
    Zhang, L.
    Zhu, J.
    Jiang, San Ping
    Shen, P.
    Date
    2016
    Type
    Journal Article
    
    Metadata
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    Citation
    Huang, S. and Zhang, L. and Zhu, J. and Jiang, S.P. and Shen, P. 2016. Crumpled nitrogen- and boron-dual-self-doped graphene sheets as an extraordinary active anode material for lithium ion batteries. Journal of Materials Chemistry A. 4 (37): pp. 14155-14162.
    Source Title
    Journal of Materials Chemistry A
    DOI
    10.1039/c6ta05623g
    ISSN
    2050-7488
    School
    Fuels and Energy Technology Institute
    URI
    http://hdl.handle.net/20.500.11937/52850
    Collection
    • Curtin Research Publications
    Abstract

    A novel three-dimensional, interconnected conducting layer network, comprised of crumpled nitrogen- and boron-dual-self-doped graphene sheets (NBGs) with an ultrahigh content of 7.72 at% nitrogen and 7.18 at% boron, has been synthesized through one-step thermolysis, using a borane-tert-butylamine complex as a precursor. The unique self-assembled 3D network structure offers shortened tunnels for lithium ion and electron transport and conduces the adsorption/desorption of lithium ions. As an anode material, NBGs-1000 reveals a high reversible capacity of up to 909 mA h g−1 and an excellent discharge capacity of 877 mA h g−1 after 125 cycles. It also exhibits a remarkable rate performance, including large capacities of 429 mA h g−1 and 318 mA h g−1 at 1 A g−1 and 2 A g−1, respectively. In contrast, a commercial graphite electrode has a capacity of less than 50 mA h g−1 at 1 A g−1. This demonstrates that crumpled NBGs are an extraordinary active anode material exhibiting a high capacity and good stability for lithium ion batteries, owing to their large surface area, heteroatomic defects, and the unique crumpled structure.

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