Abstract

The development of ceramic-polymer electrolyte with high mechanical and electrochemical properties is the key to address the safety issue of high-performance lithium batteries due to the use of flammable organic liquid electrolytes. In this work, we designed and synthesized a flexible low liquid leakage and high wettability ceramic-polymer electrolyte (CPE) based on poly(vinylidene fluoride) (PVDF)-poly(ethylene oxide) (PEO)-γ-Al2O3 membrane with excellent mechanical and thermal stability. After being wetted by a very small amount of LiPF6-based liquid electrolyte, symmetrical Li, Li/LiFePO4 (LFP), and LFP/Li4Ti5O12 (LTO) cells with this PVDF/PEO-γ-Al2O3-LiPF6 CPE displayed much better cycling stabilities than that of commercial Celgard 2320 separator with a sufficient amount of liquid electrolyte. The CPE requires only a small amount of liquid electrolyte to achieve the desired electrochemical performance of lithium batteries. Its low liquid leakage characteristic also enhances the safety of lithium batteries, with the potential to replace the commercial separators.

Full Text
Published version (Free)

Talk to us

Join us for a 30 min session where you can share your feedback and ask us any queries you have

Schedule a call