Non-flammable free-standing TiO2 nanotubular hybrid membrane prepared by a two-step anodization

In this study, we introduce a novel method for synthesizing a free-standing, high-aspect-ratio TiO2 nanotubular (TNT) hybrid membrane. The TNT membrane was fabricated using a two-step electrochemical anodization process, incorporating lactic acid as an additive to enhance mechanical properties and growth rate. The membrane was then hybridized with a rubber polymer binder. The high aspect ratio and structural integrity of the TiO2 nanotubular hybrid membrane make it an ideal candidate for improving non-flammable properties when employed as a ceramic separator. Flame retardation tests revealed that the TNT hybrid membrane kept its structural integrity even after prolonged exposure to flame. These findings suggest that this hybrid membrane could be a valuable addition to the field of secondary batteries, offering potential applications in enhancing battery safety and performance.