材料科学
压电
纳米纤维
复合材料
微观结构
纳米发生器
极限抗拉强度
能量收集
能量(信号处理)
数学
统计
作者
Zikui Bai,Zhiyuan Yao,Guiying Wu,Kaiwu Liu,Dezhan Ye,Yue Tao,Shili Xiao,Dongzhi Chen,Zhongmin Deng,Jie Xu,Yinshan Zhou,Shijun Wei,Xianze Yin
标识
DOI:10.1016/j.sna.2023.114407
摘要
Piezoelectric films have good elasticity and microstructure stability, which are the basis of the piezoelectric nanogenerator to adapt to various application scenarios and run stably for a long time. In this paper, Polyurethane (PU) is introduced into PVDF nanofibers to obtain blend nanofiber film with elasticity and microstructure stability. The tensile and compression moduli of the nanofiber films are effectively controlled by changing the mass ratio of PU to PVDF. By the impact of a 5.6 g ball falling freely from a height of 16 cm, the piezoelectric output of nanofiber film with an optimized mass ratio of 35/65 is 3.58 V. The maximum peak current and power surface densities are 0.286 μA and 0.18 μW cm−2, respectively. The piezoelectric response of the nanofiber film remained stable before and after 9 cycles of 10 % compressive strain. A simulated vehicle tire pressure fluctuation energy collection device is fabricated by using the blend nanofiber film. The peak-to-peak piezoelectric response is about 0.32 V. This unique property opens up another way to harvest mechanical energy from gas pressure fluctuation. The development of PU/PVDF blend nanofiber film show inestimable application potential as a mechanical energy harvesting device for gas or liquid pressure fluctuation.
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