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Progress in Lithium–Sulfur Batteries: The Effective Role of a Polysulfide-Added Electrolyte as Buffer to Prevent Cathode Dissolution

Authors

  • Dong-Ju Lee,

    1. Department of WCU Energy Engineering, Hanyang University, 133-791, Seoul (Republic of Korea)
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    • these authors equally contributed to the work

  • Marco Agostini,

    1. Department of Chemistry, University of Rome Sapienza, Piazzale Aldo Moro, 5, 00185, Rome (Italy), Fax: (+39) 06 491769
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    • these authors equally contributed to the work

  • Ju-Won Park,

    1. Department of WCU Energy Engineering, Hanyang University, 133-791, Seoul (Republic of Korea)
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  • Prof. Yang-Kook Sun,

    Corresponding author
    1. Department of WCU Energy Engineering, Hanyang University, 133-791, Seoul (Republic of Korea)
    2. Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah (Saudi Arabia)
    • Yang-Kook Sun, Department of WCU Energy Engineering, Hanyang University, 133-791, Seoul (Republic of Korea)

      Jusef Hassoun, Department of Chemistry, University of Rome Sapienza, Piazzale Aldo Moro, 5, 00185, Rome (Italy), Fax: (+39) 06 491769

      Bruno Scrosati, Department of WCU Energy Engineering, Hanyang University, 133-791, Seoul (Republic of Korea)

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  • Dr. Jusef Hassoun,

    Corresponding author
    1. Department of Chemistry, University of Rome Sapienza, Piazzale Aldo Moro, 5, 00185, Rome (Italy), Fax: (+39) 06 491769
    • Yang-Kook Sun, Department of WCU Energy Engineering, Hanyang University, 133-791, Seoul (Republic of Korea)

      Jusef Hassoun, Department of Chemistry, University of Rome Sapienza, Piazzale Aldo Moro, 5, 00185, Rome (Italy), Fax: (+39) 06 491769

      Bruno Scrosati, Department of WCU Energy Engineering, Hanyang University, 133-791, Seoul (Republic of Korea)

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  • Prof. Bruno Scrosati

    Corresponding author
    1. Department of WCU Energy Engineering, Hanyang University, 133-791, Seoul (Republic of Korea)
    2. Department of Chemistry, University of Rome Sapienza, Piazzale Aldo Moro, 5, 00185, Rome (Italy), Fax: (+39) 06 491769
    • Yang-Kook Sun, Department of WCU Energy Engineering, Hanyang University, 133-791, Seoul (Republic of Korea)

      Jusef Hassoun, Department of Chemistry, University of Rome Sapienza, Piazzale Aldo Moro, 5, 00185, Rome (Italy), Fax: (+39) 06 491769

      Bruno Scrosati, Department of WCU Energy Engineering, Hanyang University, 133-791, Seoul (Republic of Korea)

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Abstract

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Paving the road for sulfur: A unique electrolyte composition designed for the development of stable lithium–sulfur batteries with high energy. A battery with a high and stable capacity is prepared by using an electrolyte containing a dissolved catholyte-type compound, that is, Li2S8 polysulfide. The cell is characterized by a capacity approaching the theoretical value at a working voltage of 2.1 V, which is remarkable compared to conventional lithium ion batteries.

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