Thermally Stable Al₂O₃/PTFE Composite Separator for High-Safety Lithium-Ion Batteries.

ABSTRACT: In response to the growing demand for carbon neutrality and safer energy storage, advanced separator technology is essential for ensuring the stability of lithium-ion batteries (LIBs). Conventional separators, typically made from polyolefin-based polymers, suffer from low thermal stability and poor wettability, leading to safety and performance concerns. In this study, we fabricated a nonwoven polytetrafluoroethylene (PTFE) nanofiber (NF) separator using emulsion electrospinning incorporating aluminum oxide (Al₂O₃) particles without polymeric binders. The resulting nonwoven PTFE NF separator demonstrated superior porosity, thermal stability, and electrolyte wettability compared to conventional polyolefin-based separators. Its excellent thermal stability and elongation

SUBMITTER: Kim KW 

PROVIDER: S-EPMC12423839 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature