Grid-charged EVs are a bad idea. The concept is flawed. It takes more than better batteries to fix it. You need a battery that lasts indefinitely, at least the life of the car, that has zero impact to dispose of, and that can be produces energy-free. Such batteries exist only in the land of Unicorns.

The model of grid-charged EVs is flawed. It is telling that analysis of EV efficiency that show "equivalent MPG" ignore transmission loss (energy lost between power plant and point of charge), overstate conversion efficiency at generation, understate conversion loss at point of charge, usually exclude losses from battery to motion, and leave out battery discharge when not in use. If you consider all those things, a plugin EV is less efficient than an equivalent ICE powered vehicle.

Grid dependence has many other issues too. In most the world, the grid isn't ready.

Thermodynamics suggests conversion at point of use will be more efficient. There's still a lot of room to improve internal combustion efficiency. Hybrid ICE/EV solves range, reliability, and grid dependence. Battery pollution is still present, but about 1/10th the magnitude per vehicle.

Nuclear power is a good idea for a lot of reasons. It is environmentally friendly. It is sustainable. And it is a great way to power EVs. I've been watching development of micro-scale fission generators. Generation at point of use reduces waste. Scaling down modern fission could mean 10 or 20 years between refueling, at which point a few grams of inert waste are extracted. It sounds like Jetson stuff, but it's closer to feasible than most people think. My opinion based on observation of the progress that has been made despite scarce funding and political disfavor is that if we put even half of the resources spent on PV into R&D on micro-fission, and eat away at the political barriers, it's a decade or less away. I'd trade in my hybrid for a nukemobile!