The effect of the Al/Cr proportion in six carbon-containing Na3VAlxCr1─x(PO4)3 (0 ≤x ≤ 1) samples is evaluated to unveil the influence on their performance as positive electrodes for sodium-ion batteries....
Prevention of the degradation of sodium-based layered cathode materials is the key to developing high-performance and high-stability sodium-ion batteries.
We demonstrate an economical polytetrafluoroethylene-assisted fluorination method to synthesize three binary sodium-rich fluorides Na2MVF7 (M = Mn, Fe, and Co). The optimal Na2FeVF7 cathode delivers a high reversible capacity of...