Recent advances and future prospects for PVDF-based solid polymer electrolytes

Polyvinylidene fluoride (PVDF) has emerged as a promising material for solid-state polymer electrolytes (SPEs) because of its good chemical stability, moderate mechanical strength, and wide electrochemical window. However, PVDF-based SPEs still face persistent challenges that hinder their widespread application. For example, its ionic conductivity is relatively low. And, its mechanical properties also need to be further improved. Additionally, there are still interfacial issues between PVDF-based electrolytes and high-voltage positive electrodes or lithium metal anode electrodes. Various strategies in this review to enhance ionic conductivity and promote lithium-ion transportation within the electrolyte matrix are highlighted. Furthermore, this review also summarized recent advancements in improving the interfacial compatibility between PVDF-based SPEs and electrode materials. This is crucial for reducing interfacial side reactions and boosting the overall electrochemical performance of solid-state batteries. Lastly, challenges and future perspectives in the development of PVDF-based SPEs are also outlined. The recent advances in PVDF-based SPEs offer great potential for the development of safe and high-performance solid-state batteries. The understanding gained from this review will facilitate the design and fabrication of advanced energy storage devices.