3D printing can now be used to print lithium-ion microbatteries the size of a grain of sand. The printed microbatteries could supply electricity to tiny devices in fields from medicine to communications, including many that have lingered on lab benches for lack of a battery small enough to fit the device, yet provide enough stored energy to power them.
Sometimes good things come in small packages. And sometimes those things are the most powerful batteries on the planet. Researchers at the University of Illinois at Urbana-Champaign have developed a tiny lithium-ion microbattery that leaves larger supercapacitors in the dust.