Abstract
The development of triboelectric nanogenerators (TENGs) which can be utilized to transform small and irregular energy into electricity provides a new idea to alleviate the serious energy crisis. In this study, a type of flexible TENG based on cost-effective thermoplastic polymeric nanofiber membranes fabricated via melt-blending extrusion method with good compatibility to garment had been proposed, which could be used to harvest the low-frequency mechanical energy produced by human motions. In the presence of modifications, in-situ chemical oxidative polymerization and facile dip-coating, the prepared TENG exhibited excellent humidity-resistance. Triggered by periodic motions, the device which could be applied to charge the commercial capacitor and more than 200 green LEDs revealed a high output power density of 2.06 W/m2 after introducing polyaniline. The practicability of the obtained device to scavenge the energy of body motions had been successfully proved. Especially with hand tapping as an example, the open-circuit voltage and short-circuit current reached up to 340.8 V and 73.7 μA respectively, which indicated that it is suitable for thermoplastic polymeric nanofiber membranes with outstanding wearability to be employed in TENGs to be a power supply for the smart garment under a high relative ambient humidity.
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