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Advanced Materials

Studying the Kinetics of Crystalline Silicon Nanoparticle Lithiation with In Situ Transmission Electron Microscopy

Authors

  • Matthew T. McDowell,

    1. Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA
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  • Ill Ryu,

    1. Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA
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  • Seok Woo Lee,

    1. Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA
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  • Chongmin Wang,

    1. Environmental Molecular Sciences Laboratory, Pacific Northwest National Laboratory, Richland, WA 99354, USA
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  • William D. Nix,

    1. Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA
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  • Yi Cui

    Corresponding author
    1. Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA, and Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA
    • Department of Materials Science and Engineering, Stanford University, Stanford, CA 94305, USA, and Stanford Institute for Materials and Energy Sciences, SLAC National Accelerator Laboratory, 2575 Sand Hill Road, Menlo Park, CA 94025, USA.
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Abstract

In situ transmission electron microscopy (TEM) is used to study the electrochemical lithiation of high-capacity crystalline Si nanoparticles for use in Li-ion battery anodes. The lithiation reaction slows down as it progresses into the particle interior, and analysis suggests that this behavior is due not to diffusion limitation but instead to the influence of mechanical stress on the driving force for reaction.

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