In this work, the ionic, electronic and thermal transport of NCM83-LPSCl composite cathodes has been studied experimentally. While the electronic and ionic conductivities change over orders of magnitude upon changing the volume ratios of NCM83 and LPSCl, the thermal conductivities of the composite cathodes show only minor changes with composition and are remarkably low throughout all investigated samples. Cell assembly: The respective materials (100 mg) were filled in previously introduced cell casings and densified for 3 min at 370 MPa. In the case of partial electronic conductivity measurements, the steel stamps of the cell casings served as ion-blocking contacts. For partial ionic conductivity measurements, electron-blocking LPSCl (80 mg) layers were added on each side of the sample. Subsequently In-foil (chemPUR, 99.99 %, 100 μm thickness, 9 mm diameter) and Li-foil (abcr, 99.8 %, 1.5 mg) were placed on each side serving as Li-reservoirs.