铁电偶极子对摩擦纳米发电机输出性能的影响  

The Influence of Ferroelectric Dipoles on the Output Performance of Triboelectric Nanogenerator

作　　者：李春龙 黄辉 鞠登峰 刘弘景 刘可文 高玲肖 LI Chunlong;HUANG Hui;JU Dengfeng;LIU Hongjing;LIU Kewen;GAO Lingxiao(State Grid Smart Grid Research Institute Co.,Ltd.,Beijing 102209,China;Electric Power Intelligent Sensing Technology Laboratory of State Grid Corporation,Beijing 102209,China;State Grid Beijing Electric Power Research Institute,Beijing 100075,China;Standard verification Laboratory for On-Site Testing Technology,Beijing 102209,China;School of Mechanical Engineering,Hebei University of Technology,Tianjin 300401,China)

机构地区：[1]国网智能电网研究院有限公司,北京102209 [2]国网公司电力智能传感技术实验室,北京102209 [3]国网北京电力科学研究院,北京100075 [4]现场检测技术标准验证实验室,北京102209 [5]河北工业大学机械工程学院,天津300401

出　　处：《压电与声光》2023年第6期845-854,共10页Piezoelectrics & Acoustooptics

基　　金：国家电网有限公司总部管理科技项目“高效振动取能器件制备及基于微小动能的传感器自供能技术研究”(No.5500-202158417A-0-0-00)。

摘　　要：提出了一种利用铁电偶极子提高摩擦发电机表面电荷密度的方法。利用聚偏氟乙烯(PVDF)的铁电特性,在摩擦电层形成正电荷陷阱,增强摩擦电材料的发电性能,从而提高摩擦电纳米发电机的表面电荷密度。采用铸造工艺和单轴拉伸工艺制备了PVDF薄膜,并将其集成到具有垂直分离结构的摩擦电纳米发电机中。系统地研究了PVDF膜的埋置方向、厚度和极化强度对摩擦纳米发电机输出功率的影响。结果表明,当压电膜厚度为100μm,最大极化电场为90 MV/m时,摩擦电纳米发电机的峰值功率提高了2.6倍。这项工作为调节摩擦电纳米发电机的性能提供了新的见解。A method based on ferroelectric dipole to enhance surface charge density of triboelectric generator was proposed.By using the ferroelectric properties of polyvinylidene fluoride(PVDF),a positive charge trap was formed in the triboelectric layer to enhance the electric generating performance of the triboelectric material,so as to improve the surface charge density of the triboelectric nanogenerator.The PVDF film was fabricated by casting and uniaxial tensile process,and integrated into the triboelectric nanogenerator with vertical separation structure.The influences of the embedding direction,thickness and polarization intensity of the PVDF film on the output of the triboelectric nanogenerator were systematically studied.The results showed that the embedded PVDF piezoelectric film with a thickness of 100μm and a maximum polarization electric field of 90 MV/m increased the peak power of the triboelectric nanogenerator by 2.6 times.This work has provided a new insight into regulating the properties of the triboelectric nanogenerator.

关 键 词：多功能复合材料 薄膜 电气性能 摩擦纳米发电机 

分 类 号：TM31[电气工程—电机]