Ionic Conductivity of Solid and Liquid LiAlCl4

The electrical conductivity of lithium chloroaluminate has been investigated in the temperature range between room temperature and 180°C. It is molten above 145°C. The conduction is practically purely ionic and is attributed to the transport of lithium ions. The experiments show high values for ionic conductivity in the solid state, only exceeded by Li‐β‐alumina and some LiI‐based materials. At 25°C the conductivity was found to be , with an activation enthalpy for of 0.47 eV. A‐C conductivity measurements were influenced by sample preparation and cell arrangement. The ionic conductivities of this and several other newly found lithium ionic conductors, as well as those previously known, are compared in the temperature range between 20° and 250°C.