Nanowires boost laptop battery life to 20 hours

brianmed writes: Stanford researchers have found a way to use silicon nanowires to reinvent the rechargeable lithium-ion batteries that power laptops, cell phones, MP3 players and other portable devices. The new version, developed through research led by Yi Cui, assistant professor of materials science and engineering, produces up to 10 times the amount of electricity of existing lithium-ion batteries.