| Abstract Scope |
Metallic lithium (Li) is a highly attractive anode for next-generation rechargeable batteries due to its ultrahigh theoretical capacity, lowest redox potential, and low density. However, its practical use is restricted by non-uniform Li nucleation, unstable plating/stripping, and low Coulombic efficiency. Safety concerns are further amplified by the thermal shrinkage of polyolefin separators under high-rate or elevated-temperature operation, increasing the risk of internal short circuits.
Polyimide-based composite separators have recently gained attention as a promising solution to these challenges. Incorporating functional fillers and engineered architectures into polyimide matrices significantly improves thermal stability, mechanical robustness, and ion-transport properties. Additionally, surface-modified polyimide separators help regulate Li-ion flux and suppress dendrite formation, enabling more stable long-term cycling.
This presentation will highlight our recent progress in designing and understanding polyimide-based composite and surface-engineered separators, offering strategies and insights for advancing separator technology toward safe and durable Li metal–based batteries. |