Most charging stations already have lithium batteries installed as a buffer for the grid, and those batteries tend to be safer designs since there's no weight/density penalty for fixed infrastructure. Sodium batteries would just make charging stations cheaper to build.
A lot of people tend to think of the ideal charging station as a gas station, where lots of cars go to quickly add range. But gas stations have large capacity because of their disadvantages. Ideally if they were safe, cheap, and compact, wouldn't you want gas stations everywhere? I'd love to have a gas station at home, in every parking garage, and at every scenic viewpoint on the road. The reason we don't have that is because gas stations emit toxic vapors and have giant tanks of combustible liquid. They need tanker trucks to regularly refuel them. Charging stations don't have those problems, which is why you can make them much smaller and put them almost anywhere. You don't even need a grid connection. Solar + batteries works in places where land is cheap.
A lot of people tend to think of the ideal charging station as a gas station, where lots of cars go to quickly add range. But gas stations have large capacity because of their disadvantages. Ideally if they were safe, cheap, and compact, wouldn't you want gas stations everywhere? I'd love to have a gas station at home, in every parking garage, and at every scenic viewpoint on the road. The reason we don't have that is because gas stations emit toxic vapors and have giant tanks of combustible liquid. They need tanker trucks to regularly refuel them. Charging stations don't have those problems, which is why you can make them much smaller and put them almost anywhere. You don't even need a grid connection. Solar + batteries works in places where land is cheap.