Cathode materials for sodium-ion batteries often suffer from low operating voltage, sluggish kinetics and high cost. Here, the authors report an iron-based alluaudite-type sulphate cathode, which could achieve a high redox potential of 3.8 V versus sodium, high energy density and fast rate kinetics.
- Prabeer Barpanda
- Gosuke Oyama
- Atsuo Yamada