摩擦电效应
材料科学
接触带电
聚合物
偶极子
极化(电化学)
电荷密度
化学物理
复合材料
纳米技术
光电子学
有机化学
物理化学
化学
量子力学
物理
作者
Zhaoqi Liu,Yunzhi Huang,Yanjun Shi,Xinglin Tao,Peng Yang,Xuanyi Dong,Jun Hu,Zhao‐Xia Huang,Xiangyu Chen,Jinping Qu
标识
DOI:10.1002/adfm.202302164
摘要
Abstract To achieve high charge density for the triboelectric polymer is a crucial task for fabricating triboelectric nanogenerators (TENGs). This work has developed a quenching polarization (QP) method to create ultrahigh and long‐persistent triboelectric charge on the triboelectric polymer with weak dipole polarity. The Ethylene chlorotrifluoroethylene copolymer (ECTFE) film can reach a charge density of 391 µC m −2 in the vertical contact mode by using this QP treatment, which is 200% higher than the result achieved by the most widely used method of corona polarization. The mechanism of the improvement through QP on the triboelectric properties is studied on the basis of the polarization induced grain refinement and interfacial trapping. The QP‐treated ECTFE can maintain ultra‐high charge density for both solid‐solid and solid‐liquid TENG. More interestingly, the charge induced by QP treatment is so persistent that it produces a recoverable discharging phenomenon for solid‐liquid TENG, which has never been observed before. This QP method provides a different approach for fabricating high‐performance triboelectric materials, while the QP‐induced changes in crystallization and tribo‐charge density can help to complete the physical understanding of the electrification mechanism of triboelectric polymer.
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