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    Increasing Stability of Lithium-Ion Batteries with Ordered Graphene Silicon Negative Electrodes

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    IEDOB Final Thesis.pdf (15.62Mb)
    No. of downloads: 1126

    Date
    2013
    Author
    Ahmed, Asif
    Babiuch-Hall, Jan
    Babu, Taarika
    Chen, Gary
    Devries, Desiree
    Dunford, Karen
    Jayatilake, Madara
    Li, Emily
    Wingate, Scott
    Yan, Joseph
    Advisor
    Wang, Chunseng
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    Abstract
    Currently, lackluster battery capability is restricting the widespread integration of Smart Grids, limiting the long-term feasibility of alternative, green energy conversion technologies. Silicon nanoparticles have great conductivity for applications in rechargeable batteries, but have degradation issues due to changes in volume during lithiation/delithiation cycles. To combat this, we use electrochemical deposition to uniformly space silicon particles on graphene sheets to create a more stable structure. We found the process of electrochemical deposition degraded the graphene binding in the electrode material, severely reducing charge capacity. But, the usage of mechanically mixing silicon particles with grapheme yielded batteries better than those that are commercially available.
    URI
    http://hdl.handle.net/1903/13881
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