Abstract
We report an arch-shaped triboelectric nanogenerator (A-TENG) as for a simple and effective water-wave energy harvesting device. The A-TENG consists of arch-shaped polyethylene terephthalate (PET) polymer film and flat Al metal electrode. Especially, the arch-shape of PET provides an inherent restoring force after the contact with Al; which significantly reduces the weight and volume of the TENG. For a mild mechanical impact of water waves with an amplitude of 5 cm and frequency of 1 Hz, the single A-TENG unit generates an open-circuit voltage of 8 V and closedcircuit current of 200 nA. In addition, two A-TENG units connected in parallel generate almost double the voltage and current. These results imply that the scaled-up A-TENG units could be used at water-breakers in coastal areas for effective harvesting of ocean wave mechanical energy.
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