Advancing the ferroelectric-based triboelectric nanogenerator via composition optimization

Abstract

This work reports the vertical-contact mode triboelectric nanogenerator based on ferroelectric material, Bi0.5(Na1-xKx)0.5TiO3 where $x}=0,0.18$ (BNT-BKT). Various mixture ratios are used to find out the best materials composition. The low-cost Solid-state synthesis method synthesized high-quality BNT-BKT. Enhancement of electrical output of a ferroelectric material via doping another high dielectric constant material. Solid state reaction method was used for the materials fabrication. The BNT-BKT particles have a wide structural diversity and are lead-free, which can be further employed to make a composite film. A vertical contact-separate triboelectric nanogenerator device is fabricated, which can easily be assembled based on a composite film of PDMS and BNT-BKT polycrystalline particles. The voltage, current, and charge of the BNT-BKT/PDMS device were measured to be $291V}, 3.47\mu A}$, and 42nC, respectively. The device is used for energy harvesting through LEDs and commercial watches. Further, we have reported a self-powered motion sensor. In the future, it can help with low-power healthcare sensors. © 2023 IEEE.