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TiS2 is a stable layered transition metal sulfide with applications in energy storageEnergy storage, electronic devices, and catalysis. Synthesis methods include colloidal synthesis, liquid-phase reaction, and low-temperatureTemperature chemical precipitation, but these often introduce impurities and have low reproducibility and low productivity. The CVT method, using a completely enclosed environment, significantly reduces impurity introduction, resulting in high-purity and well-crystallized products. This study synthesized TiS2 by the CVT method, examining the effects of Ti/S stoichiometric ratio, calcination temperatureTemperature, and reaction time on the product's structure and morphologyMorphologies. Optimal conditions were found to be a Ti/S ratio of 1:2, a calcination temperatureTemperature of 600 °C, and a calcination time of 24 h. Crystalline products are difficult to obtain below 500 °C or with a Ti/S ratio of 1.5. With the increase of reaction time, TiS2 shows better crystallinity and homogeneity. TiS2 synthesized by the CVT method exhibits a maximum specific capacity of 225 mAh g−1 at a current densityDensity of 50 mA g−1 and retains 60.8% capacity after 10,000 cycles at 1 A g−1.

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Synthesis of TiS2 Magnesium Ion Battery Cathode Material by CVT Method

  • 会议论文

  • 发表日期：

    2025年

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  • Jinan Wang,
  • Jiang Diao,
  • Hao Qin,
  • Hongyu Liu,
  • HongYi Li,
  • Bing Xie,
  • Guangsheng Huang,
  • Jingfeng Wang,
  • Fusheng Pan

摘要

TiS2 is a stable layered transition metal sulfide with applications in energy storageEnergy storage, electronic devices, and catalysis. Synthesis methods include colloidal synthesis, liquid-phase reaction, and low-temperatureTemperature chemical precipitation, but these often introduce impurities and have low reproducibility and low productivity. The CVT method, using a completely enclosed environment, significantly reduces impurity introduction, resulting in high-purity and well-crystallized products. This study synthesized TiS2 by the CVT method, examining the effects of Ti/S stoichiometric ratio, calcination temperatureTemperature, and reaction time on the product's structure and morphologyMorphologies. Optimal conditions were found to be a Ti/S ratio of 1:2, a calcination temperatureTemperature of 600 °C, and a calcination time of 24 h. Crystalline products are difficult to obtain below 500 °C or with a Ti/S ratio of 1.5. With the increase of reaction time, TiS2 shows better crystallinity and homogeneity. TiS2 synthesized by the CVT method exhibits a maximum specific capacity of 225 mAh g−1 at a current densityDensity of 50 mA g−1 and retains 60.8% capacity after 10,000 cycles at 1 A g−1.