Fig. 5: Structural deterioration mechanism in NMV. | Nature Communications

Fig. 5: Structural deterioration mechanism in NMV.

From: Transition metal vacancy and position engineering enables reversible anionic redox reaction for sodium storage

Fig. 5

Ex situ XRD patterns of a NMV-M10 and b NMV, the insets are the SEM images after 100 cycles, the OP4 and O2 phases are highlighted in (b); c atomic-scale HAADF-STEM image of the NMV at the first charged state; d HAADF-STEM image of the NMV at the first charged state and the corresponding EDS mappings; e schematic illustration of the structural evolution of NMV-M10 and NMV.

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