Energy harvesting using a PZT ceramic multilayer stack

In this paper, the interdisciplinary energy harvesting issues on piezoelectric energy harvesting were investigated using a '33' mode (mechanical stress and/or electric field are in parallel to the polarization direction) lead zirconate titanate multilayer piezoelectric stack (PZT-Stack). K...

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Bibliographic Details
Published in:Smart materials and structures 2013-06, Vol.22 (6), p.065015-1-15
Main Authors: Xu, Tian-Bing, Siochi, Emilie J, Kang, Jin Ho, Zuo, Lei, Zhou, Wanlu, Tang, Xiudong, Jiang, Xiaoning
Format: Article
Language:English
Subjects:
Direct power generation
Electric power generation
Energy harvesting
Energy management
Energy use
Exact sciences and technology
General equipment and techniques
Harvesting
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Lead zirconate titanates
Mechanical instruments, equipment and techniques
Micromechanical devices and systems
Multilayers
Physics
Piezoelectricity
Transducers
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Summary:In this paper, the interdisciplinary energy harvesting issues on piezoelectric energy harvesting were investigated using a '33' mode (mechanical stress and/or electric field are in parallel to the polarization direction) lead zirconate titanate multilayer piezoelectric stack (PZT-Stack). Key energy harvesting characteristics including the generated electrical energy/power in the PZT-Stack, the mechanical to electrical energy conversion efficiency, the power delivered from the PZT-Stack to a resistive load, the electrical charge/energy transferred from the PZT-Stack to a super-capacitor were systematically addressed. Theoretical models for power generation and delivery to a resistive load were proposed and experimentally affirmed. In a quasi-static regime, 70% generated electrical powers were delivered to matched resistive loads. A 35% mechanical to electrical energy conversion efficiency, which is more than 4 times higher than other reports, for the PZT-Stack had been obtained. The generated electrical power and power density were significantly higher than those from a similar weight and size cantilever-type piezoelectric harvester in both resonance and off-resonance modes. In addition, our study indicated that the capacitance and piezoelectric coefficient of the PZT-Stack were strongly dependent on the dynamic stress.
ISSN:0964-1726
1361-665X
DOI:10.1088/0964-1726/22/6/065015