Fabrication of Piezoelectric Energy Harvester Using Polyvinylidene Fluoride Through Solution Casting Method

This research emphasizes the fabrication of a sustainable energy harvesting system through the piezoelectric energy harvester (PEH) using polyvinylidene fluoride (PVDF) with the addition of ionic liquid (IL) to improve its piezoelectric properties. The PEH is designed to convert mechanical vibrations into electrical signals. PVDF/IL composite is formed using the solution casting technique, followed by the thermal evaporation of copper electrodes onto the surface of the PEH to ensure efficient charge capture. The open‐circuit voltage generated by the harvester was measured with a multimeter. An amplifying circuit utilizing an operational amplifier IC 741 was also constructed to further enhance the output voltage signal from 190 mV to 2.13 V, enhancing the measurable voltage output signal for sensing. This work not only showcases the potential of PVDF‐based piezoelectric materials for sustainable energy solutions but also lays the groundwork for future implementations, including the integration of this technology in self‐powered sensors, contributing to the advancement of energy‐efficient systems in various applications.