Li3InBr6−xClx was synthesized and the substitution effect on conductivity was investigated. Li3InBr6−xClx was single phase at all compositions. The volume of crystal lattice was decreased with Cl content and the rate of the decrease changed at x = 3. The conductivity of Li3InBr6−xClx had a maximum in Li3InBr3Cl3 and its value was 1.2 x 10−4S/cm at 300K. The activation energy of the conduction was at the minimum around x = 3 and its value was 20kJ/mol. Phase transition temperature was lowered to 285K and the high conduction phase was stabilized by substituting Br with Cl. The 7Li nuclear magnetic resonance spectra in Li3InBr3Cl3 was sharp and it was confirmed that the diffusion of Li ion was fast at room temperature.

Substitution Effect of Ionic Conductivity in Lithium Ion Conductor, LI3InBr6−xClx. Y.Tomita, H.Matsushita, K.Kobayashi, Y.Maeda, K.Yamada: Solid State Ionics, 2008, 179[21-26], 867-70