The effects of polyvinylidene fluoride (PVDF) wt. % and electric fields on the production of PVDF fibers using a novel centrifugal electrospinning design were investigated. High-quality, bead-free fibers with diameter of (0.55 ± 0.04) μm were successfully produced. Fibers with exceptionally high -phase content of 96.1 % and piezoelectric coefficient, of (−157 ± 5) pC N were obtained using PVDF amount and electric field of 14.0 wt % and 400 V cm, respectively. Under 3.0 N repetitive vertical forces, the fabricated piezoelectric nanogenerator (PENG) exhibited impressive open-circuit voltage, short-circuit current and power density of (32.6 ± 0.7) V, (3.26 ± 0.07) μA and (15.4 ± 0.6) μW cm⁻, respectively. The production of high and well aligned -phase in the fibers indicated by good values are the likely reasons for the excellent performance of the PENG. Ultimately, potential of the fabricated PENG as a self-power supply for low-energy electronic devices was demonstrated.

中文翻译：

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一种新型离心静电纺丝设计，用于制备高性能压电纳米发电机用高取向β相PVDF纳米纤维


聚偏二氟乙烯 (PVDF) wt 的影响研究了使用新型离心静电纺丝设计生产 PVDF 纤维的百分比和电场。成功生产出直径为（0.55±0.04）μm的高质量无珠纤维。使用 PVDF 用量和电场分别为 14.0 wt % 和 400 V cm 时，获得了具有极高相含量 96.1 % 和压电系数 (−157 ± 5) pC N 的纤维。在 3.0 N 重复垂直力下，所制造的压电纳米发电机 (PENG) 表现出令人印象深刻的开路电压、短路电流和功率密度 (32.6 ± 0.7) V、(3.26 ± 0.07) μA 和 (15.4 ± 0.6) μW cm分别是⁻。良好值表明纤维中产生高且排列良好的 相，这可能是 PENG 具有优异性能的原因。最终，展示了所制造的 PENG 作为低能量电子设备自供电的潜力。