Abstract In this research work, an easy and novel approach is adopted for fabrication of piezoelectric nanogenerator (PENG) based on 3D-ZnO nanosheets (NSs). The 3D-ZnO NSs were fabricated on anodic aluminium oxide (AAO) membrane. The NSs were separated from Al bottom electrode by AAO layer and Cu thin sheet was used as top electrode. The 3D-ZnO NSs were investigated by FE-SEM, XRD, and Raman spectroscopy. A mechanical force of 3 kgf with 6 Hz was applied on PENG that generated an output voltage of 895 mV, and current of 446 nA with maximum power density 50 nW/cm2. The PENG was then utilized to charge load capacitors and found that the maximum energy could be stored at an optimum load capacitance ( C L ) of 10 nF in 600 s. The 3D ZnO NSs enhanced stability, and robustness of PENG. The fabricated PENG was continuously operated for 3 h without any degradation in output performance.

中文翻译：

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3D-ZnO纳米片制备压电纳米发电机及电荷存储系统优化

摘要 在这项研究工作中，采用一种简单而新颖的方法来制造基于 3D-ZnO 纳米片 (NSs) 的压电纳米发电机 (PENG)。3D-ZnO NSs 在阳极氧化铝 (AAO) 膜上制造。NSs通过AAO层与Al底部电极分离，Cu薄片用作顶部电极。通过FE-SEM、XRD和拉曼光谱研究了3D-ZnO NSs。对 PENG 施加 3 kgf 和 6 Hz 的机械力，产生 895 mV 的输出电压和 446 nA 的电流，最大功率密度为 50 nW/cm2。然后利用 PENG 为负载电容器充电，发现在 10 nF 的最佳负载电容 (CL) 下可以在 600 秒内存储最大能量。3D ZnO NSs 增强了 PENG 的稳定性和鲁棒性。