High-Entropy Engineering of Phosphate Based Polyanion Cathode Materials for Sodium-Ion Batteries: Advances and Perspectives.
Sodium-ion batteries (SIBs) are promising alternatives to lithium-ion batteries for large-scale energy storage due to their cost-effectiveness and resource abundance. However, conventional phosphate-based polyanionic cathodes suffer from low energy density, poor ion/electron conductivity, sluggish Na+ diffusion and cyc...