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Reduced Graphite Oxide/Nano Sn: A Superior Composite Anode Material for Rechargeable Lithium-Ion Batteries

Authors

  • Dr.  Chandrasekaran Nithya,

    1. CSIR - Network Institutes of Solar Energy and CSIR-Central Electrochemical Research Institute, Karaikudi, 630 006 (India)
    2. Present Address: Centre for Energy and Environmental Science and Technology (CEESAT), National Institute of Technology, Tiruchirappalli, 620 015 (India)
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  • Dr.  Sukumaran Gopukumar

    Corresponding author
    1. CSIR - Network Institutes of Solar Energy and CSIR-Central Electrochemical Research Institute, Karaikudi, 630 006 (India)
    • CSIR - Network Institutes of Solar Energy and CSIR-Central Electrochemical Research Institute, Karaikudi, 630 006 (India)
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Abstract

The electrochemical performance of reduced graphite oxide (RGO) anchored with nano Sn particles, which are synthesized by a reduction method, is presented. The Sn nanoparticles are uniformly distributed on the surface of the RGO matrix and the size of the particles is approximately 5–10 nm. The uniform distribution effectively accommodates the volume expansion experienced by Sn particles during cycling. The observed electrochemical performance (97 % capacity retention) can be ascribed to the flexible RGO matrix with uniform distribution of Sn particles, which reduces the lithium-ion diffusion path lengths; therefore, the RGO matrix provides more stability to the Sn particles during cycling. Such studies on Sn nanoparticles anchored on RGO matrices have not been reported to date.

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