How to find doping in sodium ion batteries

The doping of sodium ion battery can be calculated by transmission electron microscopy and other characterization techniques and first principles, which reveals the segregation behavior of doping elements in layered cathode materials of sodium ion battery during cycling, and accordingly puts forward a new idea of strengthening precipitated phases to improve the cycling stability of layered cathode materials. Sodium ion battery is a new type of low-cost battery, which is expected to replace lithium ion battery in many application fields. Doping or adjusting element composition is an effective measure to achieve high capacity and high stability of cathode materials for sodium ion batteries. However, the mechanism of performance improvement caused by doping is not deep enough.