Fabrication of a Sandwiched Core Carbon Sphere@Na3V2(PO4)2O2F@N-Doped Carbon Cathode for Superior Sodium-Ion Batteries

Cathode materials play a decisive role in the building of high energy density sodium-ion batteries. Among them, Na3V2(PO4)2O2F (NVPOF) is receiving active attention due to its high structural integ...