Extended Data Fig. 5 | Two-phase evolution in Li environment in
Na0.6[Li0.2Mn0.8]O 2. Ex situ^6 Li MAS NMR spectra for Na0.6[Li0.2Mn0.8]O 2
collected at different states of charge illustrate the two-phase nature of the
charge–discharge plateau. Negligible change in the lithium environment is
observed below the end of the plateau on discharge in the single-phase region.
Arrows indicate the unique isotropic chemical shifts for Li.