Ionic conductivity of solid lithium iodide and its monohydrate
Abstract The solid electrolytes LiI, LiI,H 2 O and LiI,D 2 O have been characterized by ac- and dc-conductivity measurements. LiI exhibits two conductivity regions: an extrinsic below ≈ 180°C and an intrinsic above, with activation energies of 0.43±0.04 eV and 0.81±0.05 eV respectively. The room temperature conductivities of the hydrates LiI,H 2 O and LiI,D 2 O are 6.6× 10 −6 and 6.1×10 −6 (Ω cm) −1 respectively. The activation energy for Li-ion motion in LiI,D 2 O is 0.66±0.05 eV.