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Dendrite-like carbon nanotube-confined polymeric sulfur as cathode materials for lithium–sulfur battery

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Abstract

We reported the synthesis of dendrite-like carbon nanotube-confined polymeric sulfur composite by modifying the surface of carbon nanotubes (CNTs) with trithiocyanuric acid (TTCA) and then copolymerizing with sulfur. DSC results show the successfully formation of robust chemical bonds between sulfur and TTCA modified CNTs, which effectively avoid the dissolution of polysulfide when used as cathodes for lithium–sulfur batteries. The composite with a high sulfur content of 78 wt% exhibits an initial charge capacity of 698 mAh g−1 and the residual capacity of 553 mAh g−1 after 1000 cycles at a rate of 1 C.

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Acknowledgements

This work was supported by the Natural Science Foundation of China (No: 11702234), the Natural Science Foundation of Hunan province (NO: 2018JJ3488), and the Opening Project of Engineering Research Center of Nano-Geo Materials of Ministry of Education of China University of Geosciences (NGM2020KF009).

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Authors and Affiliations

  1. School of Materials Science and Engineering, Xiangtan University, Xiangtan, 411105, Hunan, China

    Xiaoyu Li, Zhehao Zhang, Youlan Zou, Zhaoyang Li, Jinliang Duan & Bo Long

  2. Engineering Research Center of Nano-Geo Materials of Ministry of Education, China University of Geosciences, Wuhan, 430074, China

    Youlan Zou

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  1. Xiaoyu Li
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  2. Zhehao Zhang
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  3. Youlan Zou
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  4. Zhaoyang Li
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Correspondence to Youlan Zou.

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Li, X., Zhang, Z., Zou, Y. et al. Dendrite-like carbon nanotube-confined polymeric sulfur as cathode materials for lithium–sulfur battery. Carbon Lett. 30, 521–526 (2020). https://doi.org/10.1007/s42823-020-00121-5

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  • DOI: https://doi.org/10.1007/s42823-020-00121-5

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