A NASICON-Type Na3.67Cu0.17Fe0.5V1.33(PO4)3 Cathode with Multi-Electron Reaction for High-Energy Sodium-Ion Battery

A NASICON structured Na 3.67 Cu 0.17 Fe 0.5 V 1.33 (PO 4 ) 3 (NCFVP) sodium-ion battery cathode material with multi-electron redox reaction has been designed. The obtained NCFVP demonstrates a high capacity, high energy density, and ideal cyclability.