Soon, the charging of mobile phones might end up taking less than a minute, courtesy of an invention that brought 18-year-old Eesha Khare of Saratoga, Calif. a $50,000 prize Friday at an international science fair.
She created a so-called supercapacitor that can be fully charged in around 20 seconds, and which can store a lot of energy in a small space.
The invention could turn conventional rechargeable batteries into a thing of the past, as it can also last for over... (read more)
