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<p>In this study, N-doped carbon foam (PNC) was prepared as the cathode sulfur host material for lithium-sulfur batteries (LSBs) using a molten salt templating method. The PNC material possesses a hierarchical structure consisting of macropores, mesopores, and micropores, which can accommodate a larger number of active substances and alleviate volume expansion. The presence of micro-mesopores also helps to limit the shuttle effect of polysulfides. Furthermore, high temperature selenization was employed to prepare MnSe/PNC sample by introducing MnSe particles with higher conductivity and catalytic activity. It effectively enhanced the redox kinetics during charge-discharge cycles and facilitated the direct conversion of Li<sub>2</sub>S<sub>4</sub> to Li<sub>2</sub>S. The optimal S@MnSe/PNC electrode exhibited a capacity retention of 557.2 mAh g<sup>− 1</sup> after 300 cycles at 1&#xa0;C with an average decay rate of only 0.085% per cycle. Additionally, it maintained a relatively stable coulombic efficiency.</p>

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MnSe supported on carbon foam prepared by salt template method as advanced host cathode for lithium-sulfur battery

  • 期刊论文

  • 发表日期：

    2026年3月6日

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  • Xuefeng Zhang,
  • Qian Lv,
  • Hui Liu,
  • Aifang Guo,
  • Jianwei Ren,
  • Zaiyong Mo,
  • Zhenlong Huang,
  • Hui Wang

摘要

In this study, N-doped carbon foam (PNC) was prepared as the cathode sulfur host material for lithium-sulfur batteries (LSBs) using a molten salt templating method. The PNC material possesses a hierarchical structure consisting of macropores, mesopores, and micropores, which can accommodate a larger number of active substances and alleviate volume expansion. The presence of micro-mesopores also helps to limit the shuttle effect of polysulfides. Furthermore, high temperature selenization was employed to prepare MnSe/PNC sample by introducing MnSe particles with higher conductivity and catalytic activity. It effectively enhanced the redox kinetics during charge-discharge cycles and facilitated the direct conversion of Li2S4 to Li2S. The optimal S@MnSe/PNC electrode exhibited a capacity retention of 557.2 mAh g− 1 after 300 cycles at 1 C with an average decay rate of only 0.085% per cycle. Additionally, it maintained a relatively stable coulombic efficiency.