Nanaowire Supercapcitor Boosts Wearable Performance

Jul-11-15 MIT researchers have created a nanowire supercapacitor that can release a surge of energy when needed, paving the way to even smaller electronic wearables.

Electronic wearables like smart watches and fitness trackers occasionally require small bursts of energy so they can send their data wirelessly, a demand that can overwhelm typical batteries. As an alternative, the MIT team made the electrodes in the supercapacitors using yarns made from nanowires of niobium. The result is a supercapacitor with a volumetric power density and energy density two times and five times larger (respectively) than yarns made from carbon nanotubes, at a smaller volume and with a lower manufacturing cost.

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