Ultrahigh rate binder-free Na3V2(PO4)3/carbon cathode for sodium-ion battery

Na3V2(PO4)3 crystals are embedded in carbon nanofiber network. Carbon nanofibers could provide an electrically conductive network and prevent these crystals from aggregation, leading to ultrahigh rate capability with 76.9 mAh/g even at 100 C for sodium-ion battery cathode.137