Breakthrough in Energy Storage: Researchers Develop High-Temperature Resistant Lithium-Ion Batteries

Strategic Insights -

A team of researchers from Shandong University of Science and Technology in China has made a significant discovery in the field of energy storage. By developing a new type of polymer electrolyte membrane using polyvinylidene fluoride-hexafluoropropylene (PVDF-HFP) and nano-silica particles (SiO2), the team has created a high-temperature resistant lithium-ion battery that exhibits improved electrochemical performance and thermal stability.

Key Takeaways:

  • The researchers used a combination of PVDF-HFP and SiO2 to create a polymer electrolyte membrane that shows higher ionic conductivity and lithium ion transference number, improving the electrochemical performance of LiFePO4 batteries.
  • The capacity of the LiFePO4 half battery composed of SiO2 has almost no loss after 100 cycles at the energy density of 0.5C and 1C.
  • The new polymer electrolyte membrane containing SiO2 has better thermal stability, making it suitable for high-temperature applications.
  • The study concludes that the PVDF-HFP polymer electrolyte membrane containing SiO2 has potential application prospects in high-temperature resistant lithium-ion batteries.
  • The research was funded by the Outstanding Young Talents Project of Shandong University of Science and Technology, National Natural Science Foundation of China (NSFC), and Natural Science Foundation of Shandong Province.

Statistics:

  • The ionic conductivity of the PEMs containing SiO2 is 4.09 x 10-4 S cm-1.
  • The lithium ion transference number of the PEMs containing SiO2 is 0.53.
  • The capacity of the LiFePO4 half battery composed of SiO2 has no loss after 100 cycles at the energy density of 0.5C and 1C.
  • The PVDF-HFP polymer electrolyte membrane containing SiO2 has a thermal shrinkage of 0.5%.

Sources:

  • Qingdao, People's Republic of China, "Lithium-ion Battery Safety Polymer Electrolyte Membrane Based On Pvdf-hfp Prepared By Electrospinning Method", Journal of Energy Storage, 2025;123.
  • Shandong University of Science and Technology, "Data on Energy Storage Detailed by Researchers at Shandong University of Science and Technology (Lithium-ion Battery Safety Polymer Electrolyte Membrane Based On Pvdf-hfp Prepared By Electrospinning Method)", Energy Weekly News, July 11, 2025; p 98.
  • NSFC, "Fundamental Research Funds for the Central Universities", China.
  • Natural Science Foundation of Shandong Province, "Young Scientists Fund", China.