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Batteries

Enhancing Stability in Lithium Metal Batteries: A New Breakthrough

Strategic Insights

— 1 min read

Researchers from Ningbo University, in collaboration with other institutions, have made a significant breakthrough in improving the stability of lithium metal batteries. According to the study, published in the Journal of Power Sources, the team has demonstrated that PVDF-HFP-based polymers can form uniform gel electrolytes, fast Li+ transport channels, and ultra-long lithium symmetric cycling. This innovation has the potential to overcome the poor stability of lithium metal anodes in liquid electrolytes, reducing the risk of safety hazards.

Key Takeaways:

  • The researchers have developed a PVDF-HFP-based polymer that can form uniform gel electrolytes, which enhances the stability of lithium metal batteries.
  • The gel electrolyte enables lithium symmetric cells to achieve long cycling stability of 2700 hours at a high current density of 5 mA cm(-2).
  • The team has demonstrated that the lithium metal anode is also effectively protected, and the cycle life reaches 110 times when applied to lithium-oxygen batteries.
  • The PVDF-HFP-based polymer achieves excellent electrolyte uptake of 836.1% and fast Li+ transport channels, making it a promising solution for high power density batteries and fast charging technologies.
  • The study has not only shown the potential of this new material but also provided new insights into the current pursuit of high power density batteries and fast charging technologies.
  • Researchers Kaiwei Zhou, Zunhao Fan, Xing Xin, Snezana Papovic, Kun Zheng, Konrad Swierczek, and Zoran Mandic, along with Mingjiong Zhou, have contributed to this groundbreaking research.

Statistics:

  • The PVDF-HFP-based polymer exhibits an excellent electrolyte uptake of 836.1%.
  • The gel electrolyte enables lithium symmetric cells to achieve long cycling stability of 2700 hours at a high current density of 5 mA cm(-2).
  • The cycle life of the lithium metal anode reaches 110 times when applied to lithium-oxygen batteries.
  • The cell with LiCoO2 as the positive electrode achieves 2000 cycles with an average coulombic efficiency of around 99.5% at a current density of 2 C.

Sources:

  • NewsRx. New Chemicals and Chemistry Study Findings Have Been Reported from Ningbo University (Enhancing Stability Pvdf-hfp-based Ternary Gel Electrolyte for Dendrite-free Lithium Metal Anodes). Chemicals & Chemistry. August 22, 2025; p 1477.
  • Journal of Power Sources. Enhancing Stability Pvdf-hfp-based Ternary Gel Electrolyte for Dendrite-free Lithium Metal Anodes. 2025;647.

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