Scientists used Kevlar to create a thin membrane with holes large enough to allow lithium ions pass through and create a charge.
Scientists have wound carbon nanotube composite yarns around lithium-ion battery fibers and woven them into cotton fiber to create a battery.
A new renewable battery is made from liquid waste that results from paper processing.
Disappointed by the performance of your latest folded effort? Fear not: This new kit will juice it up in a jiffy.