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Batteries

Breakthrough in Lithium Metal Batteries: Fast Li+ Transportation and Dendrite-Free Interface

Strategic Insights

— 1 min read

Scientists at Tongji University have developed a fluorinated nano-porous filler that enhances electrochemical performance in lithium metal batteries, a crucial step towards achieving fast Li+ transportation kinetics and dendrite-free interfaces. This innovation is poised to revolutionize the field of solid-state electrolytes, a key component in the development of safer and more efficient batteries.

Key Takeaways:

  • Researchers created a fluorinated nano-porous filler, Li-IL@UIOF, which alters the solvation structure and enhances electrochemical performance in lithium metal batteries.
  • The filler features strong electron-withdrawing effects and Lewis acidity, promoting the dissociation of TFSI- and weakening the interaction between Li+ and the matrix.
  • The LiIL in the pores facilitates lithium-ion transport kinetics, and the stable solid electrolyte interphase layer formed at the Li/composite solid electrolytes interface effectively suppresses dendrite growth.
  • The electrolyte exhibits an impressive ionic conductivity of 5.68 x 10^-4 S cm^-1 and a high lithium-ion transference number of 0.60.
  • Li | VEC-PEGDA/Li-IL@UIOF/Cellulose | LiFePO4 cells demonstrate a high specific capacity of 155 mAh g^-1 at 0.5C.
  • The research was funded by the National Natural Science Foundation of China, Natural Science Foundation of Shanghai, Key R&D and Promotion Projects of Henan Province, and Key R&D and Promotion Projects of Anyang City.

Statistics:

  • 5.68 x 10^-4 S cm^-1: ionic conductivity of the electrolyte
  • 0.60: lithium-ion transference number
  • 2800 h: overcharge capacity of the electrolyte
  • 155 mAh g^-1: specific capacity of Li | VEC-PEGDA/Li-IL@UIOF/Cellulose | LiFePO4 cells at 0.5C

Sources:

  • NewsRx. Findings from Tongji University in the Area of Chemicals and Chemistry Described (Fluorine-rich Mofs-based Composite Solid Electrolytes Realizing Fast Li Plus Transportation Kinetics and Dendrite-free Interface). News of Science. September 7, 2025; p 777.
  • VerticalNews. Fresh data on Chemicals and Chemistry presented in a new report. Shanghai, People's Republic of China, Asia, Chemicals and Chemistry, Cell Surface Extensions, Dendrites, Electrolytes, Inorganic Chemicals, Neurons, Tongji University.

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