fig4

Enhanced all-climate sodium-ion batteries performance in a low-defect and Na-enriched Prussian blue analogue cathode by nickel substitution

Figure 4. Sodium storage mechanism at 25 °C. Ex-situ XRD patterns of the (A) Co0.7Ni0.3HCF and (B) CoHCF electrodes at different states during the first cycle. The dots in different colors in the charge-discharge curves (right) represent the states tested by ex-situ XRD. (C) Schematic phase evolution as a result of Na+ extraction/insertion from/into the Co0.7Ni0.3HCF.

Energy Materials
ISSN 2770-5900 (Online)
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