3D printed nano-batteries


Researchers have successfully 3D printed a battery smaller than a grain of sand with energy and power densities comparable to cell phone batteries. Eventually they could end up in medical devices and, God help us, tiny drones.

We often hear about the coming nanobot revolution, but just how are scientists planning on powering these future marvels? Well, researchers from Harvard and the University of Illinois may have found the solution in a 3D-printed battery