Trace topological doping strategy and deep learning to reveal high-rate sodium storage regulation of barium-doped Na3V2(PO4)3

at 50C rate with superior charge-discharge capability and cycling performance. Moreover, it possesses decent long-term cycling stability with 81.2% capacity retention after 2000 cycles at 50C. In summary, the results indicate that trace topological doping of alkaline metal ions in combination with deep learning has a novel ability to achieve sodium ion storage regulation for sodium ion batteries, which exquisitely provides a new perspective for screening cathode materials with high electrochemical performance.