Food-Additive-Inspired Bifunctional Proton Buffering-Iron Capture Route to Low-Defect Prussian Blue Cathodes for Sodium-Ion Batteries

Key Points

• The research aims to enhance the performance of sodium-ion batteries using low-defect Prussian blue cathodes.
• Developed bifunctional proton buffering-iron capture strategy.
• Utilized iron-based Prussian blue analogues as cathode materials.
• Conducted performance testing of the modified cathodes.
• Observations show improved charge storage capacity in sodium-ion batteries.
• Lower defect densities in Prussian blue cathodes lead to better cycling stability.