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A sulfur host based on titanium monoxide@carbon hollow spheres for advanced lithium–sulfur batteries

Author

Listed:
  • Zhen Li

    (School of Chemical and Biomedical Engineering, Nanyang Technological University)

  • Jintao Zhang

    (School of Chemical and Biomedical Engineering, Nanyang Technological University)

  • Buyuan Guan

    (School of Chemical and Biomedical Engineering, Nanyang Technological University)

  • Da Wang

    (Beijing Computational Science Research Center)

  • Li-Min Liu

    (Beijing Computational Science Research Center)

  • Xiong Wen (David) Lou

    (School of Chemical and Biomedical Engineering, Nanyang Technological University
    State Key Laboratory of Silicon Materials, School of Materials Science and Engineering, Zhejiang University)

Abstract

Lithium–sulfur batteries show advantages for next-generation electrical energy storage due to their high energy density and cost effectiveness. Enhancing the conductivity of the sulfur cathode and moderating the dissolution of lithium polysulfides are two key factors for the success of lithium–sulfur batteries. Here we report a sulfur host that overcomes both obstacles at once. With inherent metallic conductivity and strong adsorption capability for lithium-polysulfides, titanium monoxide@carbon hollow nanospheres can not only generate sufficient electrical contact to the insulating sulfur for high capacity, but also effectively confine lithium-polysulfides for prolonged cycle life. Additionally, the designed composite cathode further maximizes the lithium-polysulfide restriction capability by using the polar shells to prevent their outward diffusion, which avoids the need for chemically bonding all lithium-polysulfides on the surfaces of polar particles.

Suggested Citation

  • Zhen Li & Jintao Zhang & Buyuan Guan & Da Wang & Li-Min Liu & Xiong Wen (David) Lou, 2016. "A sulfur host based on titanium monoxide@carbon hollow spheres for advanced lithium–sulfur batteries," Nature Communications, Nature, vol. 7(1), pages 1-11, December.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13065
    DOI: 10.1038/ncomms13065
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    Cited by:

    1. Wanqing Song & Xinyi Yang & Tao Zhang & Zechuan Huang & Haozhi Wang & Jie Sun & Yunhua Xu & Jia Ding & Wenbin Hu, 2024. "Optimizing potassium polysulfides for high performance potassium-sulfur batteries," Nature Communications, Nature, vol. 15(1), pages 1-13, December.

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