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<p>Core-shell structure Fe<sub>2</sub>O<sub>3</sub>@C composite by utilizing the iron concentrate leachate with a selective chemical precipitation method and illustrate its great potential as a high-performance anode material of lithium-ion batteries (LIBs). The Fe<sub>2</sub>O<sub>3</sub>@C composite exhibits superior cyclic performance (723.08&#xa0;mA h g<sup>− 1</sup> over 300 cycles at 1&#xa0;A g<sup>− 1</sup>) and high-rate capability (322.01&#xa0;mA h g<sup>− 1</sup> even at a high current density of 5&#xa0;A g<sup>− 1</sup>) in a half cell. The excellent performance of the Fe<sub>2</sub>O<sub>3</sub>@C can be attributed to particles contain abundant internal voids, which facilitates the infiltration of the electrolyte and alleviates the volume change of electrode material, thereby enhancing the electrochemical performance of the material. Due to the unique core-shell structure nanostructure, Fe<sub>2</sub>O<sub>3</sub>@C composite shows significant pseudocapacitive behavior during discharge/charge processes, which partially accounts for the excellent lithium-ion storage performance.</p>

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Core-shell structure Fe2O3@C nanocomposite anode material prepared from the leaching solution of iron concentrate for lithium-ion batteries

  • 期刊论文

  • 发表日期：

    2025年12月22日

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  • Guimin Zhou,
  • Yin Li,
  • Li Wang,
  • Yaochun Yao,
  • Shaoze Zhang,
  • Keyu Zhang,
  • Junxian Hu,
  • Zhunqin Dong,
  • Lingling Yuan

摘要

Core-shell structure Fe2O3@C composite by utilizing the iron concentrate leachate with a selective chemical precipitation method and illustrate its great potential as a high-performance anode material of lithium-ion batteries (LIBs). The Fe2O3@C composite exhibits superior cyclic performance (723.08 mA h g− 1 over 300 cycles at 1 A g− 1) and high-rate capability (322.01 mA h g− 1 even at a high current density of 5 A g− 1) in a half cell. The excellent performance of the Fe2O3@C can be attributed to particles contain abundant internal voids, which facilitates the infiltration of the electrolyte and alleviates the volume change of electrode material, thereby enhancing the electrochemical performance of the material. Due to the unique core-shell structure nanostructure, Fe2O3@C composite shows significant pseudocapacitive behavior during discharge/charge processes, which partially accounts for the excellent lithium-ion storage performance.