The material, Li2CoCl4, was prepared and was characterized by using X-ray Rietveld structure analysis, differential thermal analysis, high-temperature X-ray diffraction and electrical conductivity measurements. The phase had orthorhombic symmetry (Imma: a = 0.71772, b = 0.72478, c = 1.02785nm), and its unit cell was related to the parent cubic spinel lattice. An orthorhombic distortion, caused by a 1:1 ordering of Li+ and Co+ ions on octahedral sites, transformed into a cubic spinel structure at 308C. The transition was of order-disorder type for the cation distribution on the octahedral sites. The Li2CoCl4 exhibited an ionic conductivity of 0.05S/cm at 400C.

R.Kanno, Y.Takeda, A.Takahashi, O.Yamamoto, R.Suyama, S.Kume: Journal of Solid State Chemistry, 1987, 71[1], 196-204