Li3V2(PO4)3/Conducting Polymer as a High Power 4 V-Class Lithium Battery Electrode

Authors

  • Jongsoon Kim,

    1. Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea
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  • Jung-Keun Yoo,

    1. Department of Materials Science and Engineering, KAIST (Korea Advanced Institute of Science and Technology), Gwahangno 335, Yuseong-gu, Daejeon 305-701, Republic of Korea
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  • Yeon Sik Jung,

    1. Department of Materials Science and Engineering, KAIST (Korea Advanced Institute of Science and Technology), Gwahangno 335, Yuseong-gu, Daejeon 305-701, Republic of Korea
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  • Kisuk Kang

    Corresponding author
    1. Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea
    • Department of Materials Science and Engineering, Research Institute of Advanced Materials, Seoul National University, 599 Gwanak-ro, Gwanak-gu, Seoul 151-742, Republic of Korea.
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Abstract

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The power capability of the NASICON-type Li3V2(PO4)3 electrode is greatly improved by coating with PEDOT, that is, poly(3,4-ethylenedioxythiophene), a conducting polymer. The Li3V2(PO4)3/PEDOT electrode delivers more than 90% of its theoretical capacity (133 mAh g−1) at a 10 C rate and 97% of this capacity is retained at this rate after 100 cycles. This remarkable power and cycle stability achieved by a simple coating process makes this 4 V-class electrode one of the most promising electrode candidates for next-generation batteries.

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