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Synthesis of sulfur-co-polymer/porous long carbon nanotubes composite cathode by chemical and physical binding for high performance lithium-sulfur batteries

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  • Tiwari, Vimal K.
  • Song, Hyeonjun
  • Oh, Yeonjae
  • Jeong, Youngjin

Abstract

The composite cathode of sulfur-rich polymer and long cylindrical porous multiwalled carbon nanotubes (LCNT) is reported for high performance lithium-sulfur (Li–S) batteries through combining both chemical and physical binding strategies of sulfur, respectively. This technique efficiently exploits the synergistic effect of ability of stabilizing the polymeric sulfur. The role of uniform distribution of highly conductive LCNT network is optimized as a cathode host material by solution route. Annealed sulfur-co-polymer (S-co-poly) composites are homogeneously well attached via physisorption with LCNT submicron channel. The composite shows a high discharge capacity of 1040 mAh g−1 in the 1st cycle of galvanostatic charge-discharge at 0.5C. Whereas, the cell maintains a reversible capacity of 610 mAh g−1 after 200 cycles, showing good capacity rate. Therefore, solvent assisted both synthesis and further proper mixing enables high active material utilization whereas porous submicron channel of CNT network, which provides conducting pathway, adsorbs sulfur copolymer homogeneously for better electrochemical performance.

Suggested Citation

  • Tiwari, Vimal K. & Song, Hyeonjun & Oh, Yeonjae & Jeong, Youngjin, 2020. "Synthesis of sulfur-co-polymer/porous long carbon nanotubes composite cathode by chemical and physical binding for high performance lithium-sulfur batteries," Energy, Elsevier, vol. 195(C).
  • Handle: RePEc:eee:energy:v:195:y:2020:i:c:s0360544220301419
    DOI: 10.1016/j.energy.2020.117034
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    References listed on IDEAS

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    1. Hoon Kim & Joungphil Lee & Hyungmin Ahn & Onnuri Kim & Moon Jeong Park, 2015. "Synthesis of three-dimensionally interconnected sulfur-rich polymers for cathode materials of high-rate lithium–sulfur batteries," Nature Communications, Nature, vol. 6(1), pages 1-10, November.
    2. Guoxing Li & Jinhua Sun & Wenpeng Hou & Shidong Jiang & Yong Huang & Jianxin Geng, 2016. "Three-dimensional porous carbon composites containing high sulfur nanoparticle content for high-performance lithium–sulfur batteries," Nature Communications, Nature, vol. 7(1), pages 1-10, April.
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    Cited by:

    1. Yang, Chen & Li, Peng & Yu, Jia & Zhao, Li-Da & Kong, Long, 2020. "Approaching energy-dense and cost-effective lithium–sulfur batteries: From materials chemistry and price considerations," Energy, Elsevier, vol. 201(C).
    2. Jiang, Zhibin & Chen, Ling & Zhang, Wenguang & Chen, Shiyu & Jian, Xiying & Liu, Xiang & Chen, Hongyu & Guo, Chunlei & Li, Weishan, 2021. "Sandwich-like NOCC@S8/rGO composite as cathode for high energy lithium-sulfur batteries," Energy, Elsevier, vol. 220(C).
    3. Lee, Won Yeol & Jin, En Mei & Cho, Jung Sang & Kang, Dong-Won & Jin, Bo & Jeong, Sang Mun, 2020. "Freestanding flexible multilayered Sulfur–Carbon nanotubes for Lithium–Sulfur battery cathodes," Energy, Elsevier, vol. 212(C).

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