Poly(vinylidene fluoride-co-hexafluoropropylene) (PVDF-HFP)-based composite nanofibers containing different barium titanate (BaTiO₃) nanoparticle contents of 10–60 wt% were fabricated by an efficient electrospinning. The piezoelectric performance of PVDF-HFP/BaTiO₃ composite nanofibers under a periodic compressional pressure of ∼20 kPa was investigated by considering the BaTiO₃ content and the electric poling. The X-ray diffraction patterns revealed the presence of piezoelectric tetragonal BaTiO₃ nanoparticles in the composite nanofibers with PVDF β-form crystals. The SEM images demonstrated that the BaTiO₃ nanoparticles were dispersed uniformly in the composite nanofibers at relatively low loadings of 10–20 wt%, but they formed aggregates at high loadings of 30–60 wt%. The piezoelectric performance of the composite nanofibers increased with the BaTiO₃ content up to 20 wt% and decreased at higher BaTiO₃ contents of 30–60 wt%, which results from the trade-off effect between the piezoelectric performance and the dispersibility of BaTiO₃ nanoparticles in the composite nanofibers. Accordingly, the composite nanofibers with 20 wt% BaTiO₃ exhibited maximum piezoelectric outputs such as voltage of ~9.63 V, current ~0.52 µA, and electric power of ~7892.2 nW. After the electric poling, the piezoelectric performance was further enhanced to ~11.69 V, ~20.56 µA, and ~1115.2 nW, which was high enough to light up a small LED bulb after rectification.

通过有效的电纺丝工艺制备了聚偏二氟乙烯-共-六氟丙烯（PVDF-HFP）基复合纳米纤维，其中钛酸钡（BaTiO ₃）的纳米颗粒含量为10-60％（重量）。考虑到BaTiO _3的含量和电极化，研究了PVDF-HFP / BaTiO ₃复合纳米纤维在约20 kPa的周期性压缩压力下的压电性能。X射线衍射图谱表明，在具有PVDFβ型晶体的复合纳米纤维中，存在压电四方BaTiO ₃纳米颗粒。SEM图像表明BaTiO ₃纳米粒子以相对较低的10–20 wt％的载荷均匀分散在复合纳米纤维中，但它们却以30–60 wt％的高载荷形成聚集体。该复合纳米纤维的压电性能与增加的BaTiO ₃含量高达20％（重量）和在较高的BaTiO降低₃的30-60重量％的含量，其从结果权衡的压电性能和钛酸钡的分散性之间的效果₃复合纳米纤维中的纳米颗粒。因此，具有20wt％的BaTiO ₃的复合纳米纤维。具有最大的压电输出，例如电压〜9.63 V，电流〜0.52 µA和电功率〜7892.2 nW。电极化后，压电性能进一步提高到〜11.69 V，〜20.56 µA和〜1115.2 nW，该电压足够高，可以在整流后点亮一个小的LED灯泡。