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    Does carbon coating really improves the electrochemical performance of electrospun SnO 2 anodes?

    Access Status
    Fulltext not available
    Authors
    Aravindan, V.
    Sundaramurthy, J.
    Elumalai, Naveen Kumar
    Kumar, P.
    Ling, W.
    von Hagen, R.
    Mathur, S.
    Ramakrishna, S.
    Madhavi, S.
    Date
    2014
    Type
    Journal Article
    
    Metadata
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    Citation
    Aravindan, V. and Sundaramurthy, J. and Elumalai, N.K. and Kumar, P. and Ling, W. and von Hagen, R. and Mathur, S. et al. 2014. Does carbon coating really improves the electrochemical performance of electrospun SnO 2 anodes? Electrochimica Acta. 121: pp. 109-115.
    Source Title
    Electrochimica Acta
    DOI
    10.1016/j.electacta.2013.12.141
    URI
    http://hdl.handle.net/20.500.11937/74035
    Collection
    • Curtin Research Publications
    Abstract

    In this paper, we report the influence of carbon coating on the electrochemical performance of hollow structured SnO2 electrospun nanofibers. The electrospun nanofibers are subjected to plasma enhanced chemical vapour deposition for a conformal carbon coating of ∼6 nm thickness without destroying the one dimensional morphological features of the fiber mats. Li-storage properties are evaluated in half-cell configuration between two different potential windows i.e. 0.005-0.8 V and 0.005-2.5 V vs. Li. The potential regions tested corresponds to the alloying/de-alloying and alloying/de-alloying & conversion reactions for former and latter cases, respectively. Very high reversibility over 3.6 moles of Li is feasible for both bare and carbon coated SnO2, without an obvious difference between the electrochemical profiles noted during cycling. In contrary, huge differences in the electrochemical performances are observed for bare and carbon coated SnO2 when the test cell is cycled for conversion reaction. This result clearly shows the importance of carbon coating for conversion reaction compared to alloying/de-alloying reaction.

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