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<p>Nickel-rich layered oxide cathodes, such as LiNi<sub>0.6</sub>Mn<sub>0.2</sub>Co<sub>0.2</sub>O<sub>2</sub> (NMC 622), are considered as promising candidates for their potential in next-generation lithium-ion batteries due to their high specific capacity and energy density. Herein, we systematically investigate the effect of particle size, controlled <i>via</i> high-energy milling for varying durations. Structural characterization confirms that the layered structure remains, while particle size is reduced. Electrochemical tests reveal that smaller particles enhance initial capacity, attributed to reduced Li-ion diffusion paths. This study demonstrates how particle size engineering can optimize the performance of nickel-rich NMC cathodes in lithium-ion battery applications.</p> Graphical abstract <p></p>

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Particle size engineering of NMC cathodes via high-energy milling for lithium-ion batteries

  • 期刊论文

  • 发表日期：

    2025年10月3日

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  • Sungmook Yoo,
  • Joonha Kang,
  • Minjae Kim,
  • Hyunah Kim

摘要

Nickel-rich layered oxide cathodes, such as LiNi0.6Mn0.2Co0.2O2 (NMC 622), are considered as promising candidates for their potential in next-generation lithium-ion batteries due to their high specific capacity and energy density. Herein, we systematically investigate the effect of particle size, controlled via high-energy milling for varying durations. Structural characterization confirms that the layered structure remains, while particle size is reduced. Electrochemical tests reveal that smaller particles enhance initial capacity, attributed to reduced Li-ion diffusion paths. This study demonstrates how particle size engineering can optimize the performance of nickel-rich NMC cathodes in lithium-ion battery applications.

Graphical abstract