Cited by 102Innovative Energy Harvesting TechnologiesAdvanced Sensor and Energy Harvesting MaterialsFerroelectric and Piezoelectric Materials

Piezoelectret foam–based vibration energy harvesting

Anton, SR, Farinholt, KM, Erturk, A·2014·Journal of Intelligent Material Systems and Structures

Abstract

The use of energy harvesting to provide power to low-power electronic devices has the potential to create autonomous, self-powered electronics. This article presents the investigation of a novel material for vibration-based energy harvesting. Piezoelectret foam, a lead-free, polymer-based electret material exhibiting piezoelectric-like properties, is investigated for low-power energy generation. An overview of the fabrication and operation of piezoelectret foams is first given. Mechanical testing is then performed, where anisotropy in the principal length directions is found along with Young’s moduli between 0.5 and 1 GPa and tensile strengths from 35 to 70 MPa. Dynamic electromechanical characterization is performed in order to measure the piezoelectric [Formula: see text] coefficient of the foam over a wide frequency range. The [Formula: see text] coefficient is found to be relatively constant at around 175 pC/N from 10 Hz to 1 kHz. Finally, the foam is evaluated as an energy harvesting material by first developing an electromechanical model to predict the voltage response during excitation, then performing dynamic experimentation to measure the voltage frequency response with comparisons to modeling predictions for a set of electrical loads, and finally conducting energy harvesting experimentation in which the foam is used to charge a capacitor. Harmonic excitation of a pre-tensioned 15.2 cm × 15.2 cm sample at 60 Hz and displacement of ± 73 µm yields an average power of 6.0 µW delivered to a 1 mF storage capacitor. The capacitor is charged to 4.67 V in 30 min, proving the ability of piezoelectret foam to supply power to small electronic components.

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Crossref · 10.1177/1045389x14541501

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Authors
Anton, Sr., Farinholt, K., & Erturk, A.
Affiliations
  • Tennessee Technological University (US)
  • Luna Innovations, Inc., Charlottesville, VA, USA
  • George W. Woodruff School of Mechanical Engineering, Georgia Institute of Technology, Atlanta, GA, USA
Venue
Journal of Intelligent Material Systems and Structures
Published
2014-07-07
Volume
25
Issue
14
Pages
1681-1692
ISSN
  • 1045-389X (ISSN-L)
  • 1530-8138
OpenAlex
W1973517834
Cited by
102
References
26
Citations by year
2026: 3 · 2025: 2 · 2024: 1 · 2023: 7 · 2022: 9 · 2021: 6 · 2020: 11 · 2019: 14 · 2018: 8 · 2017: 11 · 2016: 18 · 2015: 12
FWCI
15.94
Type
journal article
Language
en
Open access
closed
Locations
Journal of Intelligent Material Systems and Structures (publishedVersion)
Funders
  • U.S. Department of Energy
  • Los Alamos National Laboratory
Topics
  • Physical Sciences › Engineering › Mechanical Engineering › Innovative Energy Harvesting Technologies
  • Physical Sciences › Engineering › Biomedical Engineering › Advanced Sensor and Energy Harvesting Materials
  • Physical Sciences › Materials Science › Materials Chemistry › Ferroelectric and Piezoelectric Materials
Keywords
vibration energy harvesting, piezoelectric coefficient, electromechanical characterization, mechanical anisotropy, Young's modulus, tensile strength, electromechanical modeling, self-powered devices, low-power electronics, capacitor charging

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