Why your phone charges quickly one day but slowly the next, or why electric cars still take an hour or more to charge, is a ...

It takes just minutes to charge a solid-state battery. That might not sound like a big deal until you consider that the lithium-ion battery in your phone or electric car can take nearly an hour to ...

Researchers now have a clearer picture of the chemical mechanisms underlying lithium-ion batteries—and it could lead to faster, more efficient batteries for electric vehicles, portable electronics, ...