A high rate and stable electrode consisting of a Na3V2O2X(PO4)2F3−2X–rGO composite with a cellulose binder for sodium-ion batteries

Na₃V₂O_2X(PO₄)₂F_3−2X–rGO with CMC binder shows the enhanced electrochemical performance; it exhibits 98% capacity retention at 0.1C rate over 250 cycles. Also, it remits discharge capacity of 98 mA h g⁻¹ at 0.2C in a full cell with a NaTi₂(PO₄)₃–MWCNT.