Tailoring metal–ligand coordination in Prussian blue cathodes for long-cycling and high-rate sodium-ion batteries

This study modulates coordination by adjusting Na 3 -Cit and VC binding, activating LS iron in PBAs by reducing [Fe(CN) 6 ] 4− vacancies. FeMn-2VC shows high rate capability (105.98 mAh g −1 at 0.5 A g −1 ) and cycling stability (71.72% after 700 cycles).