Lead-free Ba_0.85Ca_0.15Zr_0.1Ti_0.9O₃ piezoelectric nanofiber was synthesized using the electrospinning technique. The surface of sintered BCZT nanofibers was modified by dopamine via the chemical coating method. Dopamine-modified BCZT nanofibers were used as fillers in polyvinylidenefluoride–hexafluoropropylene (PVDF-HFP) polymer matrix to cast flexible composite films by solution casting method. Nanofibers and composite films were analyzed by XRD and FE-SEM to investigate crystal structure and morphology, respectively. The broadband dielectric spectroscopy was carried out in composite films having 3.4–24.1 vol% BCZT nanofibers. The composite film having 24.1 vol% nanofibers showed a maximum dielectric constant (61 at 1 kHz) compared with other films. A flexible nanogenerator (NG) was fabricated using epoxy as a packing material. The developed NG tested in different tapping modes and exhibited maximum output voltage and power density around 10 V and 2.9 μW/cm³, respectively.

中文翻译：

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多巴胺改性的Ba 0.85 Ca 0.15 Zr 0.1 Ti 0.9 O 3超细纤维/ PVDF-HFP复合纳米发电机：对输出电信号的协同效应

无铅Ba _0.85 Ca _0.15 Zr _0.1 Ti _0.9 O ₃使用静电纺丝技术合成了压电纳米纤维。烧结的BCZT纳米纤维的表面通过多巴胺通过化学涂覆方法进行了改性。多巴胺改性的BCZT纳米纤维被用作聚偏二氟乙烯-六氟丙烯（PVDF-HFP）聚合物基质中的填料，通过溶液流延法流延柔性复合膜。通过XRD和FE-SEM分析了纳米纤维和复合膜，分别研究了晶体结构和形态。宽带介电谱是在具有3.4-24.1％（体积）BCZT纳米纤维的复合薄膜中进行的。与其他薄膜相比，具有24.1％（体积）纳米纤维的复合薄膜显示出最大介电常数（在1 kHz时为61）。使用环氧树脂作为填充材料制造了柔性纳米发电机（NG）。³，分别。