Examination of time-averaged Li + densities shows the presence of diffusion channels between both Li(2)-Li(2) sites and Li(1) -Li(2) sites (Figure ), which appear unchanged with temperature. In the previous section, using site-projection analysis, we identified that two types of Frenkel pairs allow Li + ions to diffuse: V Li(2) -I Li(1) and V Li(2) -I Li .