Abstract To date, the fabrication of high-performance flexible energy harvesters/nanogenerators based on piezoelectric poly(vinyldene fluoride) (PVDF) is of great concern due to their huge potential to realize full-flexible self-powered electronics. Herein, in this work, we report a flexible piezoelectric nanogenerator (PNG) based on a textured hybrid film consisting of PVDF and manganese dioxide (MnO2) nanorods. It is found that the combination of MnO2 and PVDF can notably facilitate the formation of piezoelectric phase, increase the crystallinity and promote the polarization level, inducing dramatically strengthened piezoelectric and output activity for PVDF. Additionally, the addition of MnO2 has the effect of significantly enhancing the mechanical property while slightly increasing dielectric constant of nanocomposites, which are advantageous to further harnessing the output enhancement. With an optimal loading of 1.0 wt% MnO2, the piezoelectric coefficient (d33 ≈ 38 pC/N) and correspondingly output response of hybrid films reached the peak. For instance, under the d33 working mode, an output voltage of 3.2 V can be achieved in hybrid films while that of PVDF is only 1.7 V.

中文翻译：

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具有优异压电性能的柔性纹理 MnO2 纳米棒/PVDF 混合薄膜，用于能量收集应用

摘要 迄今为止，基于压电聚偏二氟乙烯（PVDF）的高性能柔性能量收集器/纳米发电机的制造因其实现全柔性自供电电子设备的巨大潜力而​​备受关注。在这里，在这项工作中，我们报告了一种基于由 PVDF 和二氧化锰 (MnO2) 纳米棒组成的纹理混合膜的柔性压电纳米发电机 (PNG)。发现MnO2和PVDF的结合可以显着促进压电相的形成，提高结晶度并促进极化水平，从而显着增强PVDF的压电和输出活性。此外，MnO2 的加入具有显着提高力学性能的作用，同时略微提高纳米复合材料的介电常数，这有利于进一步利用输出增强。最佳负载量为 1.0 wt% MnO2 时，混合薄膜的压电系数 (d33 ≈ 38 pC/N) 和相应的输出响应达到峰值。例如，在d33工作模式下，混合薄膜可以实现3.2 V的输出电压，而PVDF的输出电压仅为1.7 V。