Supplement Table S1,etc

The supplementary material includes the energies of Li-doped configurations, Na ion extracted configurations, the atomic structures and lattice parameters of NaMnO2 and Na1-xLi1/3Mn2/3O2 (x = 0, 0.167, 0.333, 0.5, 0.667, 0.833, and 1.0), the related energy of Li final position in Li interlayer migration, and the energy profiles of Li interlayer migration in various environments.