No batteries? No sweat! Wearable biofuel cells now produce electricity from lactate #WearableWednesday
I guess when it comes to wearables of the future, you should sweat the small stuff? Via TechXplore:
Their new biofuel cell array looks like a paper bandage that can be worn, for example, on the arm or forearm. It essentially consists of a water-repellent paper substrate onto which multiple biofuel cells are laid out in series and in parallel; the number of cells depends on the output voltage and power required. In each cell, electrochemical reactions between lactate and an enzyme present in the electrodes produce an electric current, which flows to a general current collector made from a conducting carbon paste.
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