A Piezoelectric Energy Harvester Utilizing Pb[ZrxTi1−x]O3 Thick Film on Phosphor Bronze

Abstract

Keywords: piezoelectric energy harvester, phosphor bronze substrate, high accelerationIn this work, a bridge-type piezoelectric energy harvester combined with proof masses that can work at high acceleration was designed, simulated, and fabricated. The energy harvester was achieved by bonding bulk Pb[Zr x Ti 1−x ]O 3 (PZT) onto a flexible phosphor bronze substrate by a lowtemperature process, and an additional tungsten mass was assembled at the center of the bridge top surface to reduce the resonant frequency of the harvester. The device has good flexibility and is operable under high-acceleration conditions. The experimental results showed that at the resonant frequency, which is 511 Hz, the maximum open-circuit voltage is 4.72 V, when the input vibration acceleration is 8g. The maximum output power and output power density under 8g are 56.74 μW and 721.286 μW/cm 3 , respectively. Additionally, we applied the fabricated device on a vacuum compression pump to test the output voltage, and found the maximum output voltage to be 0.34 V.

Piezoelectric Polymer Multilayer Coating Method for Vibration Energy Harvester

“…(5,6) In particular, the vibration energy harvester (VEH) is being actively researched because vibration is ubiquitous in the environment and has relatively high energy density. (7) There are several types of VEH, i.e., electrostatic, (8) electromagnetic, (9) friction, (10) ionic liquid, (11) and piezoelectric, (12) in the micro-electromechanical systems (MEMS) field. The electrostatic type uses the phenomenon that when a charged object approaches a conductor, a charge of the opposite polarity is generated.…”

Fabrication of Solidified Ionic Liquid with 3D Microstructures and Its Application to Vibration Energy Harvester

“…As an alternative solution to the issues, energy harvesting, which obtains electric power from external energy sources, has attracted considerable attention. (3)(4)(5)(6)(7) Among energy sources, vibration is potentially a more extractable energy than other sources such as sunlight, radio waves, and heat. (3) In addition, as vibration sources exist everywhere, there are various applications of vibration energy harvesting, e.g., wearable devices, maintenance for buildings and gas pipelines, and automotive sensors.…”