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"The battery breakthrough that could charge your iPhone in five SECONDS
Graphene-based supercapacitors can charge and discharge thousand times faster than conventional batteries
Prototypes cane be produced using a standard DVD burner
PUBLISHED: 13:40 EST, 1 March 2013 | UPDATED: 13:42 EST, 1 March 2013
HOW IT WORKS
For any supercapacitor to be effective, two separated electrodes have to be positioned so that the available surface area between them is maximized.
This allows the supercapacitor to store a greater charge.
A previous design stacked the layers of graphene serving as electrodes, like the slices of bread on a sandwich. However, this didn't work with electronic cicruits.
In their new design, the researchers placed the electrodes side by side using an interdigitated pattern, akin to interwoven fingers.
This helped to maximize the accessible surface area available for each of the two electrodes while also reducing the path over which ions in the electrolyte would need to diffuse.
'Using this technique, we have been able to produce more than 100 micro-supercapacitors on a single disc in less than 30 minutes, using inexpensive materials.'