摩擦电效应
纳米发生器
材料科学
渗透(认知心理学)
聚偏氟乙烯
电介质
介电常数
渗流阈值
导电体
复合材料
相对介电常数
复合数
渗流理论
电导率
光电子学
电气工程
电阻率和电导率
聚合物
化学
物理化学
工程类
神经科学
压电
生物
作者
Binbin Zhang,Guo Tian,Deping Xiong,Tao Yang,Fengjun Chun,Zhong Shen,Zhangxi Lin,Wen Li,Weiqing Yang
出处
期刊:Research
[AAAS00]
日期:2021-01-01
卷期号:2021
被引量:41
标识
DOI:10.34133/2021/7189376
摘要
Introducing the conductive intermediate layer into a triboelectric nanogenerator (TENG) has been proved as an efficient way to enhance the surface charge density that is attributed to the enhancement of the dielectric permittivity. However, far too little attention has been paid to the companion percolation, another key element to affect the output. Here, the TENG with MXene-embedded polyvinylidene fluoride (PVDF) composite film is fabricated, and the dependence of the output capability on the MXene loading is investigated experimentally and theoretically. Specifically, the surface charge density mainly depends on the dielectric permittivity at lower MXene loadings, and in contrast, the percolation becomes the degrading factor with the further increase of the conductive loadings. At the balance between the dielectric and percolation properties, the surface charge density of the MXene-modified TENG obtained 350% enhancement compared to that with the pure PVDF. This work shed new light on understanding the dielectric and percolation effect in TENG, which renders a universal strategy for the high-performance triboelectronics.
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