fig1

Figure 1. Schematic illustrations of solid-state Li-S batteries using (A) traditional solid polymer electrolyte (SPE) and (B) the PO-PU-LiTFSI electrolyte, (C) fabrication of the PO-PU-LiTFSI electrolyte and sulfur cathode. SEM images from (D) cross-sectional and (E) top view of the PO-PU-LiTFSI electrolyte, the inset is an optical image of the electrolyte. (F) FTIR spectrum of the PO-PU-LiTFSI electrolyte.