Vibration-based energy harvesting with stacked piezoelectrets

Pondrom, Perceval; Hillenbrand, J.; Sessler, G. M.; Bös, Joachim; Melz, Tobias

doi:10.1063/1.4874305

Cited by 83 publications

(87 citation statements)

References 23 publications

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“…Referred to equal seismic mass and equal acceleration, this output power is larger by at least a factor of 1.4 than the values obtained from energy harvesters based on normal PP piezoelectret films. [7][8][9] This is believed to be due to the increased FOM. Above the resonance frequency the output power decreases dramatically, as expected.…”

Section: -7mentioning

confidence: 99%

“…Relevant studies show that energy harvesters based on normal cellular PP piezoelectrets or piezoelectrets made of layered fluoroethylenepropylene (FEP), excited in the {3-3} and stretching modes, can generate an output power of up to about 10 µW, referred to the acceleration g (in italics) due to gravity. [7][8][9]12 Our prior studies indicate that, compared with normal cellular PP, electron irradiated polypropylene (IXPP) not only results in piezoelectrets with improved thermal stability of d 33 and better mechanical properties, 28 but also yields enhanced stretchability after proper modifications of the microstructure. 21 Therefore, it is of interest to explore the capability of energy harvesting from vibration by using IXPP piezoelectret films.…”

Section: Introductionmentioning

confidence: 99%

“…[7][8][9][10][11][12][13][14] Piezoelectrets are charged polymer foams exhibiting strong piezoelectric effects, small bulk density, flexibility or/and stretchability. 15,16 The quasistatic piezoelectric d 33 coefficients of piezoelectrets can be up to a few hundred pC/N in polypropylene (PP) films [17][18][19][20][21][22][23] and are of similar size or larger in some fluorocarbon polymer films, /ε 0 ε r (see also Sect.…”

Section: Introductionmentioning

confidence: 99%

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Energy harvesting from vibration with cross-linked polypropylene piezoelectrets

Zhang

Sessler

2015

AIP Advances

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Piezoelectret films are prepared by modification of the microstructure of polypropylene foam sheets cross-linked by electronic irradiation (IXPP), followed by proper corona charging. Young’s modulus, relative permittivity, and electromechanical coupling coefficient of the fabricated films, determined by dielectric resonance spectra, are about 0.7 MPa, 1.6, and 0.08, respectively. Dynamic piezoelectric d33 coefficients up to 650 pC/N at 200 Hz are achieved. The figure of merit (FOM, d33 ⋅ g33) for a more typical d33 value of 400 pC/N is about 11.2 GPa−1. Vibration-based energy harvesting with one-layer and two-layer stacks of these films is investigated at various frequencies and load resistances. At an optimum load resistance of 9 MΩ and a resonance frequency of 800 Hz, a maximum output power of 120 μW, referred to the acceleration g due to gravity, is obtained for an energy harvester consisting of a one-layer IXPP film with an area of 3.14 cm2 and a seismic mass of 33.7 g. The output power can be further improved by using two-layer stacks of IXPP films in electric series. IXPP energy harvesters could be used to energize low-power electronic devices, such as wireless sensors and LED lights.

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Section: -7mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Energy harvesting from vibration with cross-linked polypropylene piezoelectrets

Zhang

Sessler

2015

AIP Advances

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“…Previous studies have already investigated the vibrationbased energy harvesting of single-layer and stacked ferroelectret PP, and focusing on the maximum power output at resonance frequency [23][24]. In this work, we are focusing on the energy harvesting ability of ferroelectret PP at low frequency compression, and with large compressive forces to resemble the pressure from human walking.…”

Section: Introductionmentioning

confidence: 99%

Energy harvesting study on single and multilayer ferroelectret foams under compressive force

Luo

Zhu

Shi

et al. 2015

IEEE Trans. Dielect. Electr. Insul.

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Cellular polypropylene (PP) ferroelectret is a thin and flexible cellular polymer foam that generates electrical power under mechanical force. This work investigates single and multilayer ferroelectret PP foams and their potential to supply energy for human-bodyworn sensors. Human foot-fall is emulated using an electrodynamic instrument, allowing applied compressive force and momentum to be correlated with energy output. Peak power, output pulse duration, and energy per strike is derived experimentally as a function of force and momentum, and shown to be a strong function of external load resistance, thus providing a clear maximum energy point. The possibility of increasing pulse time and reducing voltage to CMOS compatible levels at some expense of peak power is shown. To further increase the output power, multilayer ferroelectret is presented. The synchronized power generation of each layer is studied and illustrated using simulation, and results are supported by experiments. Finally, the energy output of single-layer and multi-layer ferroelectrets are compared by charging a capacitor via a rectifier. A ten-layer ferroelectret is shown to have charging ability 29.1 times better than that of the single-layer ferroelectret. It demonstrates energy output that is capable of powering the start-up and transmission of a typical low-power wireless sensor chipset.

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“…Мощность Таблица 2. Параметры конструкции широкополосного вибрационного генератора [16] [17]. Она состоит из четырех закре пленных с двух сторон одинаковых балок, кото рые связаны с одной внешней массой.…”

Section: #2 / 64 / 2016unclassified