Abstract
Factors affecting the ionic conductivity of lithium have been discussed in this paper. Firstly, limitations of the classical concept were shown, such as Born-Mayer equation for the prediction of the activation energy during ionic migration. These classical concepts roughly reproduce the experimental behavior, however the deviations from the prediction occasionally occur. Some of the reasons for such deviations are due to the assumptions that the crystal was composed of perfect ionic bonds, no local structural distortion around defect site, and defects are not interact one another. To understand these effects, recent experimental and computational works are reviewed.