Abstract: To improve the piezoelectric output performance of polyvinylidene fluoride (PVDF), barium titanate (BTO) nanoparticles were introduced into PVDF solution, and PVDF/BTO composite piezoelectric films were prepared using the flow-delay method, and the composite films were treated by high-temperature stretching and electrodeposition processes. The morphology and piezoelectric properties of the composite films were characterized using scanning electron microscope, X-ray diffractometer, Fourier transform infrared spectrometer, differential scanning calorimeter and quasi-static piezoelectric constant tester to investigate the effect of BTO content on the PVDF/BTO composite films and to study the mechanism of BTO-induced rearrangement of PVDF chain dipoles to form β-crystalline form. The results show that when the BTO content is 10wt%, the PVDF/BTO composite film has the most β-crystalline type in the crystal structure and the strongest piezoelectric properties. Finally, the folded structures with different layers were designed and assembled into piezoelectric nanogenerators (PENG), and it was found that the higher the number of folded layers, the higher the maximum voltage output of PENG.
张昌松, 王向阳, 魏立柱, 王如鹏. 折叠结构的PVDF/BTO复合薄膜压电纳米发电机的制备及性能研究[J]. 材料导报, 2024, 38(6): 22080132-6.
ZHANG Changsong, WANG Xiangyang, WEI Lizhu, WANG Rupeng. Preparation and Performance Study of PVDF/BTO Composite Film Piezoelectric Nanogenerators with Folded Structure. Materials Reports, 2024, 38(6): 22080132-6.
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2024, Vol. 38 
