phones

Why the future of the power grid depends on giant batteries

Say “battery,” and most people think of the device that powers our phones, our laptops, and — maybe if they’re being ambitious — our electric vehicles. But it’s time to think bigger: At their core, batteries are simply a way to store energy, and with s…

The past, present, and future of the lithium-ion battery

In 1800, Alessandro Volta invented the first version of the thing we now call a battery. We’ve come a long way from his initial gadget to the lithium-ion batteries that power much of our lives, including our phones, batteries, cars, satellites, and mo…