fig1

Figure 1. (A) The typical temperature dependence of ionic conductivity (σ) in a conventional electrolyte, contrasted with that of a SIE; (B) Schematic illustration of the solid-state superstructure and properties of SIEs; (C) Structural formula of the SIEn·X series of SIEs. This figure is adapted with permission from Ref.^[4]. SIE: State-independent electrolyte.