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<p>This study proposes a novel synthesis strategy based on the FeS<sub>2</sub>/Fe solid-state reaction, successfully preparing FeS lithium-ion battery anode materials with excellent electrochemical performance. The effects of different synthesis temperatures on the crystal structure, morphology, and electrochemical performance of FeS in lithium-ion batteries were systematically investigated. Experimental results indicate that FeS exhibits optimal crystallinity and electrochemical activity at a synthesis temperature of 950 ℃. After 100 cycles at a current density of 100&#xa0;mA.g<sup>−1</sup>, the capacity retention rate reaches 96%, and electrochemical polarisation phenomena disappear. This study provides theoretical basis and technical references for the controllable synthesis of low-cost, high-performance sulphide anode materials.</p>

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High performance FeS anode materials for Li-ion batteries synthesised by FeS2/Fe solid state reaction

  • 期刊论文

  • 发表日期：

    2025年8月30日

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  • Zhangjie Xu,
  • Zhengyue Sun,
  • Xinyan Zhang,
  • Jiliang Zhang,
  • Yingchao Yu,
  • Chuang Dong

摘要

This study proposes a novel synthesis strategy based on the FeS2/Fe solid-state reaction, successfully preparing FeS lithium-ion battery anode materials with excellent electrochemical performance. The effects of different synthesis temperatures on the crystal structure, morphology, and electrochemical performance of FeS in lithium-ion batteries were systematically investigated. Experimental results indicate that FeS exhibits optimal crystallinity and electrochemical activity at a synthesis temperature of 950 ℃. After 100 cycles at a current density of 100 mA.g−1, the capacity retention rate reaches 96%, and electrochemical polarisation phenomena disappear. This study provides theoretical basis and technical references for the controllable synthesis of low-cost, high-performance sulphide anode materials.