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<p>Among anode materials for lithium-ion batteries, carbon-based materials have garnered significant attention due to their abundant sources, low preparation costs, and outstanding safety performance and electrochemical stability. As a novel class of porous coordination polymers, metal-organic frameworks (MOFs) feature transition metal ions as core nodes and organic molecules that construct three-dimensional frameworks, endowing them with unique properties. Researchers have developed a series of advanced composite materials based on MOF-derived carbon anodes to enhance anode specific capacity and energy density. Transition metal sulfides possess high theoretical specific capacity but inevitably suffer from volume expansion during charge-discharge cycles. Cobalt-based MOF-derived sulfides offer distinct advantages: they not only exhibit high capacity but also effectively address their inherent poor conductivity, facilitating efficient charge transport within the material. Furthermore, they suppress volume expansion during cycling and enhance structural stability. Therefore, this study employed an in-situ carbon nanotube growth method on Co-MOF, followed by a two-step annealing process, to successfully prepare the Co₃S₄@NCNTs composite material with outstanding electrochemical performance. After 200 cycles at 0.2&#xa0;A g⁻¹, it achieved a high discharge specific capacity of 1069.5 mAh g<sup>− 1</sup>.</p>

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Lithium-ion battery anode materials derived from metal-organic frameworks: Co₃S₄ composite carbon nanotube network heterostructures

  • 期刊论文

  • 发表日期：

    2026年4月17日

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  • Kaifeng Yu,
  • Zaichun Jiang,
  • Ling Liu,
  • Ce Liang,
  • Lijuan Zhu

摘要

Among anode materials for lithium-ion batteries, carbon-based materials have garnered significant attention due to their abundant sources, low preparation costs, and outstanding safety performance and electrochemical stability. As a novel class of porous coordination polymers, metal-organic frameworks (MOFs) feature transition metal ions as core nodes and organic molecules that construct three-dimensional frameworks, endowing them with unique properties. Researchers have developed a series of advanced composite materials based on MOF-derived carbon anodes to enhance anode specific capacity and energy density. Transition metal sulfides possess high theoretical specific capacity but inevitably suffer from volume expansion during charge-discharge cycles. Cobalt-based MOF-derived sulfides offer distinct advantages: they not only exhibit high capacity but also effectively address their inherent poor conductivity, facilitating efficient charge transport within the material. Furthermore, they suppress volume expansion during cycling and enhance structural stability. Therefore, this study employed an in-situ carbon nanotube growth method on Co-MOF, followed by a two-step annealing process, to successfully prepare the Co₃S₄@NCNTs composite material with outstanding electrochemical performance. After 200 cycles at 0.2 A g⁻¹, it achieved a high discharge specific capacity of 1069.5 mAh g− 1.