One thought I have is that current battery technology depends on one nasty, rare chemical or another. It's difficult to extract from the Earth, possibly at the expense of human rights in some parts of the world. It's difficult to recycle also, to the point that it seems like a lot of companies are probably just quietly stacking up piles in warehouses to possibly but probably never deal with.

There are obvious benefits for convenient portable consumer devices, though. The benefits seem to outweigh the downsides, and all things considered, there's not much raw materials per-capita.

Electric vehicles are cool and fun to drive, but the benefits seem less obvious. Gas powered cars work very well, and if you look at the entire carbon cycle, it seems like they actually aren't all that bad relative to EVs. A lot of raw nasty materials to build EVs, by many orders of magnitude per-capita.

Going to batteries for wide-scale energy storage, for a vast EV charging network, just seems like a massive waste of resources. I'd rather those precious raw materials be used to build smart phones, sonic toothbrushes, and revolutionary new stuff like delivery drones, for an indefinite amount of time until a better battery technology can be developed.