Kaner Lab researcher Maher El-Kady painted sheets of graphene an atom thick on a plastic surface and bombarded it with controlled laser light (he used a DVD burner.) The result: a stunningly thin supercapacitor which could store up a large amount of electricity in minuscule time frames. A battery made of this material could charge your cell phone for a full day’s use in two seconds, and is much lighter than current metallic batteries.

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