Phase diagram and ionic conductivity of the lithium chloride-iron(II) chloride system

The phase diagram of the LiCl-FeCl2 system has been determined by differential thermal analysis and X-ray diffraction analysis. This system contains one intermediate compound with the spinel structure,Li2−2xFe1+xCl4 (0.05<= × <=0.20). The ionic conductivity of the lithium chloride spinel has been investigated between room temperature and 500°C. The conductivity increased with x. The highest conductivity,1.3×10−5Scm−1 at room temperature and 1.0×10−1Scm−1 at 400°C was obtained at the composition ofx = 0.20.