Range of diffusion barriers for diffusion either parallel or perpendicular to the interlayer plane and in/between given LTO layers. See ESI Fig. S34 and Table S10 for full data.

Path	Barrier range (eV)
Parallel, interlayer	0.01–0.79
Parallel, middle layer	0.50–1.99
Parallel, bulk layer	0.78–1.09
Perpendicular, interlayer to middle layer	0.77–1.67
Perpendicular, within middle layer	0.77–1.67
Perpendicular, middle to bulk layer	1.32–1.96