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Encapsulation of sulfur with thin-layered nickel-based hydroxides for long-cyclic lithium–sulfur cells

Author

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  • Jian Jiang

    (Nanyang Technological University—Nanjing Tech Center of Research and Development, Nanjing Tech University
    School of Physical and Mathematical Sciences, Nanyang Technological University)

  • Jianhui Zhu

    (School of Physical and Mathematical Sciences, Nanyang Technological University)

  • Wei Ai

    (Nanyang Technological University—Nanjing Tech Center of Research and Development, Nanjing Tech University
    School of Physical and Mathematical Sciences, Nanyang Technological University)

  • Xiuli Wang

    (State Key Laboratory of Silicon Materials, Key Laboratory of Advanced Materials and Applications for Batteries of Zhejiang Province, and School of Materials Science and Engineering, Zhejiang University)

  • Yanlong Wang

    (School of Physical and Mathematical Sciences, Nanyang Technological University)

  • Chenji Zou

    (School of Physical and Mathematical Sciences, Nanyang Technological University)

  • Wei Huang

    (Nanyang Technological University—Nanjing Tech Center of Research and Development, Nanjing Tech University
    Key Laboratory of Flexible Electronics (KLOFE), Institute of Advanced Materials (IAM), Nanjing Tech University (NanjingTech)
    Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications)

  • Ting Yu

    (School of Physical and Mathematical Sciences, Nanyang Technological University
    Faculty of Science, National University of Singapore)

Abstract

Elemental sulfur cathodes for lithium/sulfur cells are still in the stage of intensive research due to their unsatisfactory capacity retention and cyclability. The undesired capacity degradation upon cycling originates from gradual diffusion of lithium polysulfides out of the cathode region. To prevent losses of certain intermediate soluble species and extend lifespan of cells, the effective encapsulation of sulfur plays a critical role. Here we report an applicable way, by using thin-layered nickel-based hydroxide as a feasible and effective encapsulation material. In addition to being a durable physical barrier, such hydroxide thin films can irreversibly react with lithium to generate protective layers that combine good ionic permeability and abundant functional polar/hydrophilic groups, leading to drastic improvements in cell behaviours (almost 100% coulombic efficiency and negligible capacity decay within total 500 cycles). Our present encapsulation strategy and understanding of hydroxide working mechanisms may advance progress on the development of lithium/sulfur cells for practical use.

Suggested Citation

  • Jian Jiang & Jianhui Zhu & Wei Ai & Xiuli Wang & Yanlong Wang & Chenji Zou & Wei Huang & Ting Yu, 2015. "Encapsulation of sulfur with thin-layered nickel-based hydroxides for long-cyclic lithium–sulfur cells," Nature Communications, Nature, vol. 6(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:6:y:2015:i:1:d:10.1038_ncomms9622
    DOI: 10.1038/ncomms9622
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    Cited by:

    1. Li, Yong & Yang, Jie & Song, Jian, 2017. "Efficient storage mechanisms and heterogeneous structures for building better next-generation lithium rechargeable batteries," Renewable and Sustainable Energy Reviews, Elsevier, vol. 79(C), pages 1503-1512.
    2. Li, Yong & Yang, Jie & Song, Jian, 2017. "Design structure model and renewable energy technology for rechargeable battery towards greener and more sustainable electric vehicle," Renewable and Sustainable Energy Reviews, Elsevier, vol. 74(C), pages 19-25.

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