Nanocomposite Janus Gel Polymer Electrolytes for Lithium Metal Batteries

Lithium metal batteries (LMBs) are a key product for sustainable and efficient electric transport. Long-life safe LMBs require the development of solid or semisolid (e.g., gel polymer) electrolytes capable blocking lithium dendrites. In this context, Janus double-faced membranes (JMs) offer interesting perspectives, as they allow modulating properties each side according to specific requests. paper, we report on facile fabrication via solvent casting JMs based poly(vinylidene fluoride hexafluoropropylene) (PVDF-HFP). Here, an electronically insulating layer containing Al2O3 is in contact with anode, whereas mixed ionically–electronically conducting Al2O3, carbon nanotubes, Super P black cathode. We also investigate role JM thickness show that 40 μm membrane allows ~45% nominal capacity at 2C Coulombic efficiency ~100%. The proposed very promising LMBs.