LPSCl shows heat capacities ranging from 0.72 J g -1 K -1 to 1.10 J g -1 K -1 , NCM83 shows lower heat capacities from 0.39 J g -1 K -1 to 0.85 J g -1 K -1 . By considering the measured thermal diffusivities, calculated heat capacities and geometrical densities (Figure . This thermal conductivity lies within the typical range for sulfidic solid-state electrolytes. With a value of 0.71 ± 0.04 W m -1 K -1 , NCM83 shows the highest thermal conductivity of the investigated series in agreement with the thermal conductivities of calendared NCM cathodes reported by Gandert et al. An increase in effective thermal conductivity with increasing NCM83 volume fraction is observed.