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Advanced Materials

Encapsulated Monoclinic Sulfur for Stable Cycling of Li–S Rechargeable Batteries

Authors

  • San Moon,

    1. Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon, Republic of Korea
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  • Young Hwa Jung,

    1. Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon, Republic of Korea
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  • Wook Ki Jung,

    1. Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon, Republic of Korea
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  • Dae Soo Jung,

    1. Graduate School of EEWS (WCU), Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon, Republic of Korea
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  • Jang Wook Choi,

    Corresponding author
    1. KAIST Institute NanoCentury, Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon, Republic of Korea
    2. Graduate School of EEWS (WCU), Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon, Republic of Korea
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  • Do Kyung Kim

    Corresponding author
    1. KAIST Institute NanoCentury, Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon, Republic of Korea
    2. Department of Materials Science and Engineering, Korea Advanced Institute of Science and Technology (KAIST), Yuseong-gu, Daejeon, Republic of Korea
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Abstract

Monoclinic S8, an uncommon allotrope of sulfur at room temperature, can be formed when common orthorhombic S8 is heat-treated under enclosed environments in nanometer dimensions. Monoclinic S8 prevents the formation of soluble polysulfides during battery operation, resulting in unprecedented cycling performance over 1000 cycles under the highest sulfur content to date.

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