Morphotropic Phase Boundary-Assisted Lead-Free BaTiO3/PDMS Composite-Based Hybrid Energy Harvester: A Portable Power Source for Wireless Power Transmission

Here, in this present work, the developmentof a lightweight, flexiblehybrid energy harvester using a composite BaTi0.89Sn0.11O3 (BTS)/polydimethylsiloxane (PDMS) has beenproposed. A significantly enhanced output performance of hybrid energyharvester (HEH) was achieved by strategically coupling the piezoelectriceffect with the triboelectric output. Thus, multiphase coexisted BTSparticles as confirmed by the structural and dielectric properties,with a high value of d (33) coefficient & SIM;412pC/N, were used as filler for the functional layer (PDMS) of the device.The hybrid energy harvesting device can harvest a maximum voltageof & SIM;358 V with an instantaneous power density of 1.08 mW/cm(2) from human finger imparting (force & SIM; 100 N, frequency & SIM; 4 Hz). The fabricated device harvests energy from handwritingand differentiates fine patterns of different letters by using itas a writing pad. In addition to that, a wireless system utilizingan inductor-based resonant coupling mechanism was developed for wirelesspower transmission. The easy processability, flexibility, high outputperformance, and alignment toward a power source for wireless powertransmission make the fabricated HEH device a promising candidatefor various applications for portable smart flexi-electronics.

Automated summary

In this study, a lightweight and flexible hybrid energy harvester using a BTS/PDMS composite was developed. By strategically coupling the piezoelectric effect with the triboelectric output, the harvester achieved significantly enhanced output performance. The device could harvest energy from human finger force and differentiate fine patterns of different letters as a writing pad. A wireless power transmission system utilizing an inductor-based resonant coupling mechanism was also developed.