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The past,present,and future of piezoelectric fluoropolymers:Towards efficient and robust wearable nanogenerators

Nano Research Energy 2023年第4期2卷 41-77页

作者： Md.Mehebub Aam Xavier Crispin Laboratory of Organic Electronics Department of Science and TechnologyLinköping UniversityNorrköping SE-60174Sweden

Polyvinylidene difluoride(PVDF)derivatives in metal/PVDF/metal(MPM)sandwich structures have been studied extensively since *** copolymers of the same family have been discovered with fascinating piezoelectric,pyroelectric,electrocaloric,and ferroelectric *** processing,flexibility,lightweight,and thermal stability make this class of materials complementary to ***,PVDF based polymers potentially compete with inorganic materials for a broad range of technologies such as energy generators,loudspeakers,coolers,and ***,the stable non-electroactiveα-phase and hydrophobic nature of PVDF are the main barriers for developoing high performing and robust MPM devices in electronic *** this review,we present an up-to-date overview on different methods to induce the electroactiveβ-phase and improve the adhesion strength with metals to ensure robust and durable MPM *** go through advantages and disadvantages of several methods and pinpoint future opportunities in this research area.A special attention is paid to wearable piezoelectric nanogenerators for energy harvesting from human body motion,where flexible PVDF derivatives are compared with rigid piezoelectric *** the piezoelectric coefficient of PVDF(d_(33)~24–34 pm/V)is one order lower than ceramic materials,novel co-polymers of PVDF display d_(33)>1000 pm/V upon *** shows promise to bring piezoelectrics to flexible and large-area applications such as smart *** also discussed challenges to improve wearability,such as light weight,breathability,and flexibility.

关键词： polyvinylidene difluoride(PVDF) nanogenerators energy harvesting piezoelectric polymer surface modification metal-PVDF adhesion wearable generators

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