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September 23rd, 2003
Fuel Cells Power Up For Notebooks
NEC Corp. and Toshiba Corp. last week showed prototypes of fuel cells that they said would find their way into notebook computers before the end of next year. NEC's fuel cell achieved an output density of 50 milliwatts/cm2, which the company termed the highest density ever reported. Since the reaction occurs at the surface of the catalyst, engineers strive for materials with fine particles in order to enlarge the surface space. NEC researchers used single-walled carbon nanohorn aggregates, a type of carbon nanotube, to adsorb the platinum catalyst particles.
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