Giant Energy Harvesting via Maxwell Displacement Current Enhancement Using Metal Sheet Interspaced Hetero‐Layer Structured Piezo‐Composite Nanofiber Device

摘要: The limited performance of piezoelectric nanogenerators (PENGs) has hindered their practical applications in self‐powered electronics. To address these limitations, this study presents a new design of a PENG that incorporates hetero‐layer structured piezo‐composite nanofibers with interspaced metal sheets. The hetero‐layer structure consists of alternating layers of ferroelectric barium titanate (BT) nanoparticles interfaced with poly(vinylidene fluoride‐co‐trifluoroethylene) (P(VDF‐TrFE)) composite nanofibers (P(VDF‐TrFE)/BT), and conductive graphite nano‐sheets (GNS)‐embedded P(VDF‐TrFE) composite nanofibers (P(VDF‐TrFE)/GNS) mats. The inclusion of interspaced metal sheets in the device configuration enhances the stress concentration effect, thereby effectively distributing the applied mechanical vibrations. Simultaneously, the P(VDF‐TrFE)/BT composite nanofibers improve the piezoelectric …