Fig. 2: Structural analyses.
From: High-performance Na3V2(PO4)3/C cathode for efficient low-temperature lithium-ion batteries
a XRD spectra of NVP/C before and after charge-discharge cycling with a lithium metal anode. Rietveld-refined XRD patterns of (b) NVP/C and (c) NVP/C after charge-discharge cycling with a lithium metal anode, where observed data are indicated by red circles, the calculated pattern by a black line, and the difference pattern by blue. The residual discrepancy is shown in blue. d Raman spectra of NVP/C.
