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    A kinetic model for diffusion and chemical reaction of silicon anode lithiation in lithium ion batteries

    Access Status
    Fulltext not available
    Authors
    Xie, Z.
    Ma, Z.
    Wang, Y.
    Zhou, Y.
    Lu, Chunsheng
    Date
    2016
    Type
    Journal Article
    
    Metadata
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    Citation
    Xie, Z. and Ma, Z. and Wang, Y. and Zhou, Y. and Lu, C. 2016. A kinetic model for diffusion and chemical reaction of silicon anode lithiation in lithium ion batteries. RSC Advances. 6 (27): pp. 22383-22388.
    Source Title
    RSC Advances
    DOI
    10.1039/c5ra27817a
    School
    Department of Mechanical Engineering
    URI
    http://hdl.handle.net/20.500.11937/15280
    Collection
    • Curtin Research Publications
    Abstract

    In this paper, a kinetic model is proposed that combines lithium ion diffusion through a lithiated phase with chemical reaction at the interface between lithiated amorphous and crystalline silicon. It is found out that a dimensionless parameter, relating the concentration distribution of lithium ions to the movement velocity of phase interface, can be used to describe the lithiation process. Based on the stress distributions and lithium ion diffusion profiles calculated by an elastic and perfectly plastic model, it is shown that, as lithiation proceeds, the hoop stress that changes from initial compression to tension in the surface layer of silicon particles may lead to surface cracking.

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