A Poly (Vinylidene Fluoride‐Trifluoroethylene)‐Based Triboelectric and Piezoelectric Coefficient Generator for Energy Harvesting

ABSTRACT Nano piezoelectric or triboelectric generator shows the characteristics of light weight, good flexibility, portable, wearable, and so forth, which can effectively supply power for miniaturized electronic products. Herein, an integrated piezoelectric and triboelectric generator (PE‐TENG) is assembled using a flexible polymer‐based functional film, where poly (vinylidene fuoride‐trifuoroethylene) (P(VDF‐TrFE)) is used as the matrix and the controllable polystyrene (C‐PS) microspheres as the filler. This PE‐TENG is operated by the triboelectric and piezoelectric effects coefficient, where TENG is in vertical contact‐separation mode, combined with the PENG in the longitudinal d31 piezoelectric mode, and converting the mechanical energy into electrical energy effectively. Consequently, the triboelectric nanogenerator (TENG) fabricated using the C‐PS/P(VDF‐TrFE)‐based composite film with 9 wt% C‐PS exhibits an impressive open‐circuit voltage of approximately 956 V and a remarkable short‐circuit current of around 8.75 μA. These outstanding electrical characteristics render it a highly promising candidate for applications in self‐powered sensing and wearable devices, demonstrating its potential to meet the power demands of such innovative technological domains.