Fig. 4: AIMD simulations of the Li-ion transport.

a, b Optimized models of Li0.33La0.56TiO3 (a) and Li0.66La0.56TiO3 (b) viewed along <110>p. The 3c interstitial sites are marked by dashed circles. c Arrhenius plots of the calculated diffusion coefficients D for Li0.33La0.56TiO3 and Li0.66La0.56TiO3. The diffusion coefficients at 500, 575, 650, and 750 K were obtained directly from AIMD simulations, and those at 300 K were inferred by fitting the high-temperature data using the Arrhenius relationship.