2016-Sustainable Industrial Processing Summit
SIPS 2016 Volume 10: Battery, Recycling, Environmental, Mining

Editors:Kongoli F, Kumar V, Aifantis K, Pagnanelli F
Publisher:Flogen Star OUTREACH
Publication Year:2016
Pages:220 pages
ISBN:978-1-987820-54-6
ISSN:2291-1227 (Metals and Materials Processing in a Clean Environment Series)
CD-SIPS2016_Volume1
CD shopping page

    Encapsulate sulfur in multilateral graphene nanosheets for high-areal-capacity lithium sulfur batteries

    Yusheng Ye1; Ji Qian1; Renjie Chen1; Feng Wu1;
    1BEIJING INSTITUTE OF TECHNOLOGY, Beijing, China;
    Type of Paper: Regular
    Id Paper: 431
    Topic: 14

    Abstract:

    To progress commercial application in a mobile device and energy storage, batteries with higher energy storage density than existing lithium-ion batteries need to be developed. Lithium sulfur battery thus would be an optimal choice, because it can deliver high energy density (2600 Wh/kg) and offer low-cost and environment-friendly characteristics. However, the sulfur cathode suffers from long-chain lithium polysulfides dissolution, volume variation and poor conductivity issues, leading to low active material use and low coulombic efficiency during charge/discharge cycles. Although advanced research has helped understand important relations between confinement and performance, effective and economical strategies to improve sulfur cathode cycling remain elusive. Here, we show that encapsulate sulfur in graphene nanosheets helps isolate sulfur from the electrolyte and facilitates electrons conductivity. The unique graphene nanosheets with multilateral structure show high specific surface (638.308 m2/g) and interconnected pores, which can effectively prevent the dissolution of polysulfides and accommodate the volume change between S and Li2S. High capacity and excellent cycle performance show the as-prepared sulfur/ multilateral graphene nanosheets nanocomposite can be a promising cathode for lithium-sulfur batteries.

    Keywords:

    Cathodes; Electrochemical; Li-S; Nanomaterials;

    Cite this article as:

    Ye Y, Qian J, Chen R, Wu F. Encapsulate sulfur in multilateral graphene nanosheets for high-areal-capacity lithium sulfur batteries. In: Kongoli F, Kumar V, Aifantis K, Pagnanelli F, editors. Sustainable Industrial Processing Summit SIPS 2016 Volume 10: Battery, Recycling, Environmental, Mining. Volume 10. Montreal(Canada): FLOGEN Star Outreach. 2016. p. 146-147.