Fig. 1: Design concept of the plastic ceramic electrolyte (PCE).

a Schematic illustration showing the design concept of PCE through embedding the LATP powder into a dynamic polymer network. b 1H NMR spectra showing the –CH3⋯CF3 non-covalent interaction between EA and MTFSI monomers. c Photographs showing the self-healing ability and flexibility of PCE at 22 °C. After cracking, as shown in the top picture, the PCE can self-heal after hand-milling at room temperature for 1 min, as shown in the middle picture. d Cryo-TEM images and EDS mapping of PCE. Enriched C, F, and S elements between two LATP grains show that the grain boundaries were well-infiltrated by the SH-SPE. e Voltage-time profiles at 22 °C of the solid-state Li0-Li0 cells employing the PCE as the electrolyte.