In the cubic LLZO structure, however, there are only two different Li sites: 24d and 96h which are similar in symmetry to the 8a and 32g sites in the tetragonal structure, respectively. Both the 8a and 24d sites are tetrahedrally coordinated, while the 32g and 96h sites are octahedrally coordinated. Furthermore, the 16f sites are slightly less distorted than the 32g and the 96h sites thus it is reasonable to argue that the 16f sites disappear when the cubic structure is formed and thus the removal of the 16f sites could explain the large difference in ionic conductivity between the tetragonal and cubic LLZO structure.