Electrospun PVDF and composite nanofiber: Current status and future prescription towards hybrid Piezoelectric nanogenerators

Piezoelectricity is extensively studied for the fabrication of portable, flexible, wearable, lightweight, eco-friendly energy harvesting systems, which can produce energy from waste. Nanostructured materials help to boost energy efficiency due to their large surface-to-volume ratio and provide necessary adaptability and user-friendliness in day-to-day life. So far, piezoelectric Polyvinylidene fluoride (PVDF) nanofiber materials have promising candidates in textile industries, health care systems, tissue engineering, drug delivery, pollution control, energy harvesting, and sensing applications. Electrospinning serves as a practical, affordable, and comparatively easy approach to producing highly crystalline-aligned PVDF nanofibers from nano to micro-orders. This review focuses on the key parameters such as piezoelectric responses in PVDF, electrospinning fabrication of PVDF nanofiber, computational modelling of PVDF system, ongoing advancements in PVDF and nanocomposite fibrous scaffolds as well as the existing challenges in electrospinning technology. Additionally, recently reported PVDF based hybrid piezoelectric nanogenerators that combine triboelectric and pyroelectric mechanism and serve as high-performance self-powered sophisticated energy harvesting systems have also been reviewed. Moreover, the key aspect of this review is a comprehensive understanding of electrospun PVDF nanocomposite fiber to generate new perspectives toward the futuristic application of piezoelectric energy harvesting technology. [Display omitted] ●Electrospinning principle, its various parameters like voltage, and environmental conditions for PVDF and nanocomposite fibers are exclusively envisioned.●Further, nanofibrous scaffolds for piezoelectric energy harvesting and biomedical applications are critically discussed.●An insight into hybrid PVDF based piezo-triboelectric/pyroelectric nanogenerators towards sophisticated technology has also been highlighted.