Treatment dependent sodium-rich Prussian blue as a cathode material for sodium-ion batteries

In the preparation of Prussian blue analogs (PBAs), Na+ loss and Fe2+ oxidation take place when washing with water. Sodium-rich PBAs were prepared with sodium ascorbate aqueous solution as the washing solution, which can suppress the Na+ loss and Fe2+ oxidation. As the cathode of sodium-ion batteries, it exhibited excellent electrochemical performance.

Automated summary

The use of sodium ascorbate solution as the washing solution can effectively suppress the loss of sodium ions and oxidation of Fe2+ during the preparation of Prussian blue analogs (PBAs). As the cathode material for sodium-ion batteries, it exhibits excellent electrochemical performance.