An Advanced Selenium–Carbon Cathode for Rechargeable Lithium–Selenium Batteries

Authors

  • Chun-Peng Yang,

    1. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190 (P. R. China)
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  • Sen Xin,

    1. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190 (P. R. China)
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  • Dr. Ya-Xia Yin,

    1. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190 (P. R. China)
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  • Huan Ye,

    1. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190 (P. R. China)
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  • Juan Zhang,

    1. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190 (P. R. China)
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  • Prof. Yu-Guo Guo

    Corresponding author
    1. CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190 (P. R. China)
    • CAS Key Laboratory of Molecular Nanostructure and Nanotechnology, and Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences (CAS), Beijing 100190 (P. R. China)
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  • This work was supported by the National Natural Science Foundation of China (51225204, 91127044, and 21121063), the National Basic Research Program of China (2011CB935700, 2009CB930400, and 2012CB932900), and the Chinese Academy of Sciences.

Abstract

original image

Für den Einsatz als Kathodenmaterial in Li-Se-Batterien wurde Selen in Form cyclischer Se8-Moleküle in mesoporösem Kohlenstoff eingeschlossen. Eine Ex-situ-Studie der Se-Kathode offenbart eine Umwandlung der Se8-Ringe in Sen-Ketten während der Zyklisierung. Dies verhindert den Shuttle-Effekt von Se und führt so zu einer verbesserten volumetrischen Kapazitätsdichte und Zyklisierungsstabilität.

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