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Ferroelectret energy harvesting with 3D‐printed air‐spaced cantilever design

Ben Dali, Omar ; Seggern, Heinz von ; Sessler, Gerhard Martin ; Pondrom, Perceval ; Zhukov, Sergey ; Zhang, Xiaoqing ; Kupnik, Mario (2022):
Ferroelectret energy harvesting with 3D‐printed air‐spaced cantilever design. (Publisher's Version)
In: Nano Select, 3 (3), pp. 713-722. Wiley-VCH, e-ISSN 2688-4011,
DOI: 10.26083/tuprints-00021209,

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Item Type: Article
Origin: Secondary publication via sponsored Golden Open Access
Status: Publisher's Version
Title: Ferroelectret energy harvesting with 3D‐printed air‐spaced cantilever design
Language: English

Vibrational energy harvesters of air-spaced cantilever design, utilizing ferroelectrets as the electroactive element, are a very recent concept. Such systems, based on the d₃₁ piezoelectric effect are further studied with harvesters of improved design, partially implemented by additive manufacturing. The focus of the present work is on the dependence of frequency response, resonance frequency, and generated power on the distance of the ferroelectret from the cantilever beam and on the pre-stressing of the ferroelectret. Experimental data are compared with both analytical and numerical evaluations. It is found that the power generated can be increased by one to two orders of magnitude by proper choice of distance. A suitable pre-stress yields another increase of power by a factor of 2 to 10 and linearizes the response.Thus, normalized output powers more than 1000μW referred to an acceleration of 9.81 ms² and a seismic mass of 3.5 g, can be achieved, which significantly exceeds previous results of cantilever-based energy harvesters.

Journal or Publication Title: Nano Select
Volume of the journal: 3
Issue Number: 3
Place of Publication: Darmstadt
Publisher: Wiley-VCH
Classification DDC: 600 Technik, Medizin, angewandte Wissenschaften > 600 Technik
Divisions: 18 Department of Electrical Engineering and Information Technology > Measurement and Sensor Technology
Date Deposited: 05 May 2022 05:43
Last Modified: 23 Aug 2022 08:21
DOI: 10.26083/tuprints-00021209
Corresponding Links:
URN: urn:nbn:de:tuda-tuprints-212095
Additional Information:

Keywords: air-spaced cantilever, energy harvesting, ferroelectret, piezoelectret, piezoelectric polymers

URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/21209
PPN: 494204494
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