Flexible Copper Nanowire/Polyvinylidene Fluoride Membranous Composites with a Frequency-Independent Negative Permittivity

• DOI: 10.3390/polym15234486
• Publication Date: 2023-11-22T13:47:43Z
• Authors: Kai Sun; Ao Ma; Pengtao Yang; Jinjiu Qi; Yanhua Lei; Fei Zhang; Wenxin Duan; Runhua Fan
• Keywords: Polyvinylidene fluoride

With the increasing popularity of wearable devices, flexible electronics with a negative permittivity property have been widely applied to sensors, and energy storage. In particular, low-frequency dispersion in wide frequency range can effectively contribute stable working performance devices. this work, polyvinylidene fluoride (PVDF) was selected as matrix, copper nanowires (CuNWs) were used conductive functional filler prepare CuNWs/PVDF composite film permittivity. As content CuNWs increased, conductivity resulting composites increased sharply presented metal-like behavior. Moreover, consistent Drude model observed when formed percolative network. Meanwhile, exhibited whole test range, fluctuation spectra relatively small (-760 -584) at 20 kHz-1 MHz. The results revealed that high electron mobility is reasonable for films frequency-independent provide new idea development electronic