Perfluorosulfonic Acid Membrane for Lithium–Sulfur Batteries with S/C Cathodes

Polymer electrolyte based on Nafion-117 membranes in the Li+ form with intercalated 1,3-dioxolane-dimethoxyethane solvent mixtures (DOL-DME) has been obtained. The obtained Nafion-Li+-DOL-DME characterized by DSC analysis, IR- and impedance spectroscopy. uptake of membrane DOL-DME mixture amounts to 1.9. is an ionic conductivity ~10−7 S cm−1 at room temperature. comparative study electrochemical properties Li–S batteries liquid (1M Li(CF3SO2)2N DOL-DME) polypropylene film (PP) or S/C composites mesoporous carbon as cathode materials shown that use can improve cyclability cell. first-cycle discharge capacities electrodes battery cells PP were 730 450 mAh g−1, respectively (0.1 mV s−1). However, capacity cell reduced significantly after 10 cycles. exhibits enhanced cyclability. 365 g−1 cycles up 290 40