Cantilever-based ferroelectret energy harvesting

We present a vibrational energy harvester with fluorinated ethylene propylene (FEP)-ferroelectrets working in d31 mode. The ferroelectret film consists of two FEP films, fused together to form a parallel tunnel structure with well-defined air gaps. Its dynamic piezoelectric g31 coefficient is 0.7  ...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 2020-06, Vol.116 (24)
Main Authors: Ben Dali, O., Pondrom, P., Sessler, G. M., Zhukov, S., von Seggern, H., Zhang, X., Kupnik, M.
Format: Article
Language:English
Subjects:
Acceleration
Air gaps
Applied physics
Earth gravitation
Electronic devices
Energy harvesting
Fluorinated ethylene propylenes
Piezoelectricity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We present a vibrational energy harvester with fluorinated ethylene propylene (FEP)-ferroelectrets working in d31 mode. The ferroelectret film consists of two FEP films, fused together to form a parallel tunnel structure with well-defined air gaps. Its dynamic piezoelectric g31 coefficient is 0.7   V m   N − 1. The energy-harvesting device is an air-spaced cantilever arrangement that was produced by the additive manufacturing technique. The device was tested by exposing it to sinusoidal vibrations with an acceleration a, generated by a shaker. The measurement shows a resonance at about 35 Hz and a normalized output power of 320 μW for a seismic mass of 4.5 g at an acceleration of 0.1 g (g is the gravity of the earth). This demonstrates a significant improvement of air-spaced vibrational energy harvesting with ferroelectrets and greatly exceeds previous performance data for polymer cantilever devices.
ISSN:0003-6951
1077-3118
DOI:10.1063/5.0006620