Stretchable fuel cell is powered by sweat

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With the advent of wearable technology comes the need for novel ways to efficiently power the increasing number of devices that are becoming available. Some recent developments have included a micro-battery powered by saliva and a device that can generate energy from movement. However, one limiting factor has been the flexibility of the energy source. Now, a team of engineers at the University of California at San Diego have developed stretchable fuel cells that extract energy from sweat. The engineers at the university’s Center for Wearable Sensors used lithography techniques to print 3D cathode and anode rays as rows of…

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