Machine learning-accelerated discovery of multi-cation entropy-stabilized NASICON solid electrolytes with 10 000 hours of stable Na plating/stripping for all-solid-state sodium batteries

Machine learning (ML)-guided entropy engineering approach discovers a medium-entropy NASICON solid electrolyte (Na 3.5 Zr 1.0 Ti 0.5 Lu 0.5 Si 2 PO 12 ) with 1.3 mS cm −1 conductivity, 10 000 hours of Na cycling, and superior battery performance.