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<p>For seeking an appropriate host in the fields of Li-S batteries, it is significant to innovate a host which load sufficient S element. It provides a space for interaction between Li and S elements. At meanwhile, it prevents the dissolution of intermediate polysulfides. In there, we report a prominent host that are synthesized by yttria (Y<sub>2</sub>O<sub>3</sub>), sulfur, and Ti<sub>3</sub>C<sub>2</sub>T<sub>F</sub> by the methods of hydrothermal method and ball milling method. This structure can entrap and store sulfur elements timely. By combing these merits, composite with 63.42 wt% sulfur arrive a prominent initial discharge capacitance, has 1521.056 mAh g<sup>− 1</sup> at 1&#xa0;A g<sup>− 1</sup>, after 1000 cycles, still has 1175.15 mAh g<sup>− 1</sup>, In comparison to this, composite with carbon nanotubes (CNTs) offers a greater initial discharge capacitance 1750.24 mAh g<sup>− 1</sup>, experiences with 1000 cycles, still has 1576.24 mAh g<sup>− 1</sup>, has 0.00995% capacitance delay per cycle, keeps 90.05% retention.</p>

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Mesoporous octahedron laminar structure as an effective host for Li-S batteries

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年5月19日

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  • Pai Lv,
  • Xin-wei Wang,
  • Jian Li,
  • Yan-yang Duan,
  • Chun-peng Hui,
  • Shun-hua Wang

摘要

For seeking an appropriate host in the fields of Li-S batteries, it is significant to innovate a host which load sufficient S element. It provides a space for interaction between Li and S elements. At meanwhile, it prevents the dissolution of intermediate polysulfides. In there, we report a prominent host that are synthesized by yttria (Y2O3), sulfur, and Ti3C2TF by the methods of hydrothermal method and ball milling method. This structure can entrap and store sulfur elements timely. By combing these merits, composite with 63.42 wt% sulfur arrive a prominent initial discharge capacitance, has 1521.056 mAh g− 1 at 1 A g− 1, after 1000 cycles, still has 1175.15 mAh g− 1, In comparison to this, composite with carbon nanotubes (CNTs) offers a greater initial discharge capacitance 1750.24 mAh g− 1, experiences with 1000 cycles, still has 1576.24 mAh g− 1, has 0.00995% capacitance delay per cycle, keeps 90.05% retention.