Pearl-Structure-Enhanced NASICON Cathode toward Ultrastable Sodium-Ion Batteries.

Abstract in brief

• This study focuses on improving sodium-ion batteries by developing a new cathode material called Na V Fe PO (NVFP), which combines vanadium with more abundant and cheaper elements like Fe and Mn to reduce costs and toxicity.
• The researchers used a ball-milling assisted sol-gel method to synthesize NVFP with highly conductive Ketjen Black (KB), resulting in a pearllike KB structure that enhances conductivity, charge balance, and structural stability during cycling.
• The optimized pNVFP cathode demonstrates excellent electrochemical performance, with high capacity retention over 5000 cycles, fast charge/discharge capabilities, and stable cycling, making it a promising candidate for large-scale energy storage applications.]