The flexible piezoelectric nanogenerator (PNG) has been spotlighted as a promising candidate for sustainable power source in wireless portable device. Here, a multi-layered BaTiO₃ (BTO) /poly(vinylidene fluoride) (PVDF) PNG has been designed by spin coating and layer by layer assembled method. Benefited from the composite strategy and interlaminar electric field effect, the typical four-layered BTO/PVDF nanogenerator contained with 20 wt% BTO nanoparticles represents excellent output performance with voltage of 14.22 V (about 6.49 times than that of 1 layered PNG), current of 2.42 μA, and maximum power of 11.55 μW. The dielectric constant and residual polarization of the PNG vary with the number of piezoelectric layers, which is suspected as the root cause for the enhancement of piezoelectric and output performance. In addition, 4000 pressing-releasing cycles test, finger tapping and foot striking measurements also demonstrated excellent stability of the synthesized BTO/PVDF PNG, showing their great potential in wireless sensing and wearable device applications.

柔性压电纳米发电机（PNG）已成为无线便携式设备中可持续电源的有希望的候选者。在这里，多层BaTiO ₃（BTO）/聚偏二氟乙烯（PVDF）PNG是通过旋涂和逐层组装的方法设计的。得益于复合策略和层间电场效应，包含20 wt％BTO纳米颗粒的典型四层BTO / PVDF纳米发电机在14.22 V电压（比1层PNG的电压约6.49倍）的情况下表现出出色的输出性能。 2.42μA，最大功率为11.55μW。PNG的介电常数和残留极化随压电层的数量而变化，这被认为是增强压电和输出性能的根本原因。此外，4000次压力释放循环测试，手指敲击和敲击脚步也证明了合成的BTO / PVDF PNG的出色稳定性，