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- W4223986504 abstract "Herein, the one-step fabrication of novel three-dimensional sponge-like piezoelectric electrospun nanofiber structures is reported. Ferroelectric polymers are biocompatible and flexible materials that present attractive opportunities for the fabrication of portable energy harvesters for energy efficient wearable electronic devices. While being compatible with diverse fabrication methods, thicker and denser 3D forms have only been obtained from extruder-based, low-yield approaches. Electrospinning polyvinylidene fluoride (PVDF) and polyvinylidene fluoride-co-trifluoroethylene (PVDF-TrFE) solutions with added polyethylene oxide (PEO) and lithium chloride was explored as an alternative approach for the scaled-up fabrication of 3D structures. The resulting PVDF/PEO and PVDF-TrFE/PEO 700 µm thick sponge-like fiber mats were used as active cores for piezoelectric generators. The produced sponge-like core generators achieved an average peak-to-peak voltage of 69.4 V when subjected to a 1.58 N impact force applied at a frequency of 4 Hz and connected to a 15.1 M Ω resistive load. Their measured instantaneous output power of 40.7 µW cm–2 exceeds that of similar state-of-the-art generators by a factor of 2. Our fabrication method provides a low-cost, one-step, and scalable alternative for creating micro- and nanofibrous three-dimensional structures." @default.
- W4223986504 created "2022-04-19" @default.
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- W4223986504 date "2022-07-01" @default.
- W4223986504 modified "2023-10-09" @default.
- W4223986504 title "Sponge-like piezoelectric micro- and nanofiber structures for mechanical energy harvesting" @default.
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- W4223986504 doi "https://doi.org/10.1016/j.nanoen.2022.107286" @default.
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