National Geographic reports that "tiny is big in the quest to build batteries that store more energy for cars, buildings, and personal electronics."
"Nanosize batteries that are 80,000 times thinner than a human hair represent a promising new front. They could advance the use of electric vehicles, now limited by short driving ranges, and of renewable energy, which needs storage for times when the wind doesn't blow or the sun doesn't shine."
"The latest breakthrough: a 'nanopore' that's the ultimate in miniaturization. It's a hole in a ceramic sheet, no thicker than a grain of salt, that contains all the components a battery needs to produce electric current. One billion of these holes, connected in a honeycomb fashion, could fit on a postage stamp."