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<p>As a result of mechanochemical processing of graphite (Gr), sulfur, and MoSe<sub>2</sub> mixtures, nanocomposites nsGr/S, gMoSe<sub>2</sub>-nsGr and gMoSe<sub>2</sub>-nsGr/S have been prepared. Their structure and electrochemical performance in lithium-sulfur cells are investigated. It has been demonstrated that the nsGr/S forms a conductive porous matrix, but shows poor cycling stability due to the polysulfide shuttle effect. Coating the separator with a gMoSe<sub>2</sub>-nsGr layer leads to an initial specific capacity increasing up to ~400 mA·h/g and its maintaining up to ~50 % after 50 charge–discharge cycles. The best performance is observed when gMoSe<sub>2</sub>-nsGr is used both in the cathode and as a separator coating (~620 mA·h/g and ~80 % capacity retention after 50 cycles)</p>

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Mechanochemically Obtained MoSe2/Nanostructured Graphite Nanocomposites for Lithium-Sulfur Batteries

  • 期刊论文

  • 发表日期：

    2026年7月6日

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  • O. A. Kozarenko,
  • V. S. Dyadyun,
  • V. G. Koshechko

摘要

As a result of mechanochemical processing of graphite (Gr), sulfur, and MoSe2 mixtures, nanocomposites nsGr/S, gMoSe2-nsGr and gMoSe2-nsGr/S have been prepared. Their structure and electrochemical performance in lithium-sulfur cells are investigated. It has been demonstrated that the nsGr/S forms a conductive porous matrix, but shows poor cycling stability due to the polysulfide shuttle effect. Coating the separator with a gMoSe2-nsGr layer leads to an initial specific capacity increasing up to ~400 mA·h/g and its maintaining up to ~50 % after 50 charge–discharge cycles. The best performance is observed when gMoSe2-nsGr is used both in the cathode and as a separator coating (~620 mA·h/g and ~80 % capacity retention after 50 cycles)