Cellphones could be charged by voice chatter — still annoy everyone else

Here’s your daily dose of science: Researchers in South Korea have been working on technology that could turn sound into electricity, something that could potentially let you charge your cellphone while also talking into it, in addition to a multitude of other uses.

Ultracapacitor maker Ioxus raises $21M

Capacitor maker Ioxus announced today that it has raised $21 million to ramp up development and production of ultracapacitors — a nascent battery space that could more useful than traditional batteries in electric cars.

Accidental nano-breakthrough may be big for batteries, bioenergy

Researchers at the Department of Energy’s Argonne National Laboratory in Argonne, Ill., have found a way to assemble nanoparticles into larger structures, a technique that could accelerate the development of battery and bioenergy-based technologies.