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Encapsulation of Sulfur in a Hollow Porous Carbon Substrate for Superior Li-S Batteries with Long Lifespan

Authors

  • Sen Xin,

    1. Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, P. R. China
    2. University of CAS, Beijing, P. R. China
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  • Ya-Xia Yin,

    1. Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, P. R. China
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  • Li-Jun Wan,

    1. Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, P. R. China
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  • Yu-Guo Guo

    Corresponding author
    • Key Laboratory of Molecular Nanostructure and Nanotechnology, Beijing National Laboratory for Molecular Sciences (BNLMS), Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing, P. R. China
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E-mail: ygguo@iccas.ac.cn

Abstract

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A hollow carbon substrate is prepared via a simple hydrothermal method with sulfonated polystyrene sphere as the template. A sulfur-carbon composite based on the carbon substrate shows a high electrochemical activity, an ultralong lifespan (255 days, 600 cycles), and a favorable rate capability in a Li-S battery.

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