Scale-up Preparation of Na-Enriched Prussian White Cathode Assisted by Manganese Oxalate for Sodium-Ion Batteries.

Sodium manganese hexacyanoferrate, also called Prussian white (PW), has attracted much attention as a promising cathode material for Na-ion batteries due to its high-voltage platform and inexpensive elemental composition. However, their parasitic vacancies and water molecules often deteriorate the electrochemical performance. Proper regulation of such defects in scale-up preparation is still a challenge.