Flexible piezoelectric nanogenerators (F‐PENG) as a clean, green power generation device have attracted much attention. Dielectrophoresis (DEP) was used to prepare flexible piezoelectric nanogenerators with necklace‐like oriented structure. The results showed that the oriented structure significantly improved the electrical output performance of F‐PENG by enhancing the stress and free charge transmission. For the F‐PENG with 8 vol% oriented PZT particle, open‐circuit voltage and short‐circuit current reached 176 V and 35 μA and an instantaneous power of up to 2 mW was collected for an optimal matched load resistance of 6 MΩ. Output voltage and current increase by 135% and 133%, respectively, compared with the F‐PENG with random structure. Meanwhile, the finite element simulation results also confirmed the superiority of this oriented structure. There was a clear linear relationship between the output voltage and pressure, and the sensitivity was 1.13 N/V. The oriented PZT particle‐based F‐PENG with excellent electrical output performance has great application prospects in the fields of green power generation and self‐powered building monitoring system.

中文翻译：

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基于项链状PZT粒子链的高性能柔性压电纳米发电机

柔性压电纳米发电机（F-PENG）作为一种清洁的绿色发电设备已经引起了广泛的关注。介电电泳（DEP）用于制备具有项链状取向结构的柔性压电纳米发电机。结果表明，定向结构通过增强应力和自由电荷传输，显着提高了F-PENG的电输出性能。对于具有8vol％定向PZT颗粒的F-PENG，开路电压和短路电流分别达到176 V和35μA，并且为了获得6MΩ的最佳匹配负载电阻，收集了高达2 mW的瞬时功率。与具有随机结构的F-PENG相比，输出电压和电流分别增加了135％和133％。同时，有限元模拟结果也证实了这种定向结构的优越性。输出电压和压力之间存在明显的线性关系，灵敏度为1.13 N / V。具有优异电输出性能的定向PZT粒子基F-PENG在绿色发电和自供电建筑物监控系统领域具有广阔的应用前景。