Fig. 6: Structural evolution mechanisms of S-NMO.
From: Engineering Na+-layer spacings to stabilize Mn-based layered cathodes for sodium-ion batteries
a In situ XRD patterns, b in situ XRD contour map, c calculated lattice parameters, and d ex situ 23Na MAS NMR spectra of S-NMO during the charge–discharge processes. e The comparison of XRD patterns of S-NMO at different cycles.
