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<p>Carbon-based materials are promising anodes for lithium-ion batteries (LIBs), but their practical application is limited by low capacity and poor initial Coulombic efficiency. Herein, we report a facile one-step pyrolysis strategy using Fe-modified ZIF-8 precursors (Zn / Fe = 40:1) to synthesize Fe-N<sub>4</sub> co-doped porous carbons (Fe-N<sub>4</sub>C-900) as high-performance LIB anodes. Electrochemical evaluations demonstrate that the Fe<sub>40</sub>-N<sub>4</sub>C-900 anode delivers a reversible capacity of 1180 mAh g⁻<sup>1</sup> after 1000 cycles at 0.1 A g⁻<sup>1</sup>, with excellent rate performance (235 mAh g⁻<sup>1</sup> at 10 A g⁻<sup>1</sup>). This performance outperforms undoped N-carbon and most reported M-N<sub>4</sub>C anodes (Co, Ni, Mn), attributed to enhanced Li⁺ storage sites, rapid ion/electron transport, and stable structure. This work provides insights into structure-performance relationships of M-N<sub>4</sub>C anodes and a scalable route for advanced LIB materials.</p>

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One-step synthesis of MOF-derived Fe-N4 -doped porous carbon for high-performance lithium-ion battery anodes

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年3月27日

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  • Guoli Wang,
  • Kangning Zhao,
  • Haiyan Guo,
  • Heli Hu,
  • Yifan Yang,
  • Jichao Gao,
  • Shuhai Wang

摘要

Carbon-based materials are promising anodes for lithium-ion batteries (LIBs), but their practical application is limited by low capacity and poor initial Coulombic efficiency. Herein, we report a facile one-step pyrolysis strategy using Fe-modified ZIF-8 precursors (Zn / Fe = 40:1) to synthesize Fe-N4 co-doped porous carbons (Fe-N4C-900) as high-performance LIB anodes. Electrochemical evaluations demonstrate that the Fe40-N4C-900 anode delivers a reversible capacity of 1180 mAh g⁻1 after 1000 cycles at 0.1 A g⁻1, with excellent rate performance (235 mAh g⁻1 at 10 A g⁻1). This performance outperforms undoped N-carbon and most reported M-N4C anodes (Co, Ni, Mn), attributed to enhanced Li⁺ storage sites, rapid ion/electron transport, and stable structure. This work provides insights into structure-performance relationships of M-N4C anodes and a scalable route for advanced LIB materials.