But there was still a long way to go. The Mercedes with a Factorial battery hadn’t yet been taken out on the road. That was the only place the technology really mattered. Many start-ups have ...

Share Resize Listen (2 min) Sample solid-state battery cells made by Ion Storage Systems at its pilot factory in Beltsville, Md. Photo: Christopher Mims/WSJ ...

Federal spending is turbocharging a scramble to build more EV battery-recycling plants in the U.S. and make them more efficient and eco-friendly too.

That could convince more people to buy electric cars, since some drivers still say that range anxiety—being concerned about how far they can make it on a single charge—holds them back from ...