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Batteries

Enhancing Lithium-Ion Battery Performance with Mxene Coating

Strategic Insights

— 1 min read

Researchers at the Nanjing University of Aeronautics and Astronautics have developed an innovative interfacial engineering strategy employing two-dimensional transition metal carbide (MXene) nanosheets to improve the structural and electrochemical stability of high-nickel layered oxide cathode materials. The study, funded by the National Natural Science Foundation of China, introduces a conformal surface modifier that enhances charge and ion transport at the cathode material interface, promoting rate performances. The MXene coating also mitigates the attack of HF by preferential adsorption of PF5, significantly improving cycling stability, especially at high operating voltage.

Key Takeaways:

  • The study introduces an innovative interfacial engineering strategy using MXene nanosheets to improve the structural and electrochemical stability of high-nickel layered oxide cathode materials.
  • The MXene coating enhances charge and ion transport at the cathode material interface, promoting rate performances.
  • The MXene coating mitigates the attack of HF by preferential adsorption of PF5, significantly improving cycling stability, especially at high operating voltage.
  • The modified material exhibits excellent electrochemical performance, with 96.75% capacity retention at 4.5 V after 100 cycles at 1 C, which is higher than that of bare NCM90 (76.09%).
  • The rate capability of the modified material is also enhanced, with a capacity of 142 mAh g-1 at 10 C, compared to 110.6 mAh g-1 for bare NCM90.
  • The study provides a new reference for constructing stable high-energy-density Ni-rich layered cathodes with MXene materials.

Statistics:

  • 96.75% capacity retention at 4.5 V after 100 cycles at 1 C.
  • 76.09% capacity retention for bare NCM90 at 4.5 V after 100 cycles at 1 C.
  • 142 mAh g-1 capacity at 10 C for the modified material.
  • 110.6 mAh g-1 capacity at 10 C for bare NCM90.
  • The study was funded by the National Natural Science Foundation of China (NSFC).

Sources:

  • Extraordinarily Enhanced Rate and Stability of Ni-rich Cathodes Through Mxene Coating. Inorganic Chemistry Frontiers, 2025.
  • NewsRx. New Engineering Study Findings Reported from Nanjing University of Aeronautics and Astronautics (Extraordinarily Enhanced Rate and Stability of Ni-rich Cathodes Through Mxene Coating). Journal of Engineering. October 20, 2025; p 1979.

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