Spin-regulated d–p hybridization enables high energy density and wide temperature operation of Na 3 V 2 (PO 4 ) 2 O 2 F-type cathodes for sodium-ion batteries

Key Points

• The aim is to enhance the performance of Na3V2(PO4)2O2F cathodes through spin-regulated d–p hybridization.
• Dual-doping NVPOF with various transition metals and fluorine
• Adjustment of V 3d–O 2p bonding
• Evaluation of electronic and ionic conductivities
• Reduced bandgap leading to improved conductivity
• Enhanced high rate capability of the cathodes