Synergistic Electronic and Ionic Modulation of Na3V2(PO4)3 Cathode: Sn4+/Cu2+ Heterovalent Co-Doping for High-Rate and Long-Life Sodium-Ion Batteries
Na3V2(PO4)3 is a promising cathode for sodium-ion batteries but suffers from poor electronic conductivity. In this work, a heterovalent Sn4+/Cu2+ codoping strategy is proposed, and comprehensive structural analyses, electrochemical tests, and density functional theory calculations are employed to elucidate the synerg...