Recent Advances in PVDF/Carbon-Based Nanocomposite Fibers for Piezoelectric Energy Harvesting Applications

For several decades, energy regeneration has been attempting to fulfill the growing demand for green and sustainable energy. Various devices have been designed and developed to capture energy and convert it into useful forms. Piezoelectric nanogenerators (PNGs) have been seen as a promising option for traditional rechargeable batteries because they directly scavenge a wide spectrum of unlimited mechanical energy. Piezoelectric materials exhibit extraordinary electrical properties, great adaptability, superior maneuverability, and durability. Among the various materials used for developing piezoelectric materials, polyvinylidene fluoride (PVDF) and its derivatives have been known to be the best options for fabricating nano-piezoelectric producers. Nevertheless, the nanogenerator’s piezo response generation is too small and insufficient to run thermionic equipment. Extensive efforts have been made to improve and reinforce PVDF-derived nano-piezoelectric devices. Considering the key aspects of materials and production technologies, this review focuses on carbon-based nanocomposite materials, their manufacturing methods, and performance indicators. In addition, the corresponding cutting-edge methods, alternative models, and beneficial substances are highlighted to improve the piezoelectric structure, arrangement of electric doublets, charge carriers, etc. Consequently, productivity-based materials can transform mechanical energy into electricity, opening the door for PVDF-based nanogenerators to eventually become practical energy sources.