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

Kai Sun, Ao Ma, Pengtao Yang, Jinjiu Qi, Yanhua Lei, Fei Zhang, Wenxin Duan, Runhua Fan

Abstract read

In one paragraph

Article in Polymers, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

8 authors.

Kai SunCollege of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.ORCID 0000-0001-7396-5813

Ao MaCollege of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.

Pengtao YangCollege of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.

Jinjiu QiCollege of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.

Yanhua LeiCollege of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.ORCID 0000-0001-8850-3531

Fei ZhangCollege of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.

Wenxin DuanCollege of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.

Runhua FanCollege of Ocean Science and Engineering, Shanghai Maritime University, Shanghai 201306, China.

Funding

Shanghai Engineering Technology Research Centre of Deep Offshore Material 19DZ2253100Shanghai Pujiang Program 22PJ1411300The Innovation Program of Shanghai Municipal Education Commission 2019-01-07-00-10-E00053The National Natural Science Foundation of China 52101178, 52271182The Natural Science Foundation of Shanghai 22ZR1426800Young Elite Scientist Sponsorship Program by China Association for Science and Technology YESS20200257

6 · The paper itself

Abstract

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

Indexed as

conductive polymerflexible electronicslow-frequency dispersionnegative permittivity

Identifiers

PMID38231915

DOI10.3390/polym15234486

PMCPMC10708450

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