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Electric vehicles

Breakthrough in Energy Storage: Researchers Develop Next-Generation Lithium-Ion Batteries

Strategic Insights

— 1 min read

Electric vehicles have long struggled to compete with traditional internal combustion engine vehicles in terms of charging speed. Lithium-ion batteries, the most common type used in battery electric vehicles, have limitations in fast-charging processes. Researchers at the University of Tehran have made significant strides in developing next-generation lithium-ion batteries, capable of achieving an 80% state of charge in under 15 minutes. The breakthrough leverages an electrochemical-thermal-airflow model to optimize battery performance, revealing valuable insights for developing improved battery designs.

Key Takeaways:

  • Researchers have identified key challenges in enabling extreme fast charging (XFC) in lithium-ion batteries, including high polarization, elevated maximum temperatures, significant temperature gradients, and lithium plating.
  • The study employed an electrochemical-thermal-airflow model to investigate the impact of cell chemistry on XFC performance of an air-cooled 4680 lithium-ion battery.
  • The model was validated against experimental data from an 18,650 SONY VTC6 battery and simulated three different cathode materials: Li1.1(Ni0.33Co0.33Mn0.33)0.9O2 (NMC111), LiMn2O4 (LMO), and LiNi0.8Co0.15Al0.05O2 (NCA).
  • Lithium plating can be mitigated by charging the battery at higher temperatures, with the LMO cell exhibiting superior thermal stability compared to the NMC111 cell.
  • A parametric study revealed that reducing the particle size of the NCA cathode significantly decreases concentration polarization.

Statistics:

  • The study aimed to achieve an 80% state of charge in under 15 minutes, a key requirement for electric vehicles to compete with traditional internal combustion engine vehicles.
  • The model was validated against experimental data from an 18,650 SONY VTC6 battery available in the literature.
  • The study simulated three different cathode materials: Li1.1(Ni0.33Co0.33Mn0.33)0.9O2 (NMC111), LiMn2O4 (LMO), and LiNi0.8Co0.15Al0.05O2 (NCA).
  • The results indicate that reducing particle size of the NCA cathode decreases concentration polarization by a significant amount.

Sources:

  • E. Houshfar, S. M. Yasrebi, and M. Ashjaee, "Extreme Fast Charging Performance of 4680 Lithium-ion Batteries: Thermo-electrochemical Analysis of Chemistry Effects," Journal of Energy Storage, vol. 132, 2025.
  • NewsRx, "Findings on Energy Storage Reported by Investigators at University of Tehran (Extreme Fast Charging Performance of 4680 Lithium-ion Batteries: Thermo-electrochemical Analysis of Chemistry Effects)," Energy Weekly News, October 24, 2025, p. 173.

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