Optimization and improvement of thermal energy harvesting by using pyroelectric materials

Fatnani, Fatima Zahra El; Guyomar, Daniel; Mazroui, M.; Belhora, Fouad; Boughaleb, Y.

doi:10.1016/j.optmat.2016.01.048

Cited by 30 publications

(18 citation statements)

References 15 publications

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“…Moreover, further contributions can occur through thermally stimulated currents . Such systems are close to real‐time applications and have been used to investigate energy harvesting possibilities using pyroelectric materials and are therefore used in this investigation. Figure shows the measured temperature variation near the surface of sample as a function of time for a constant frequency (heating/cooling cycles) (taken at various frequencies and shown only at 0.06 Hz).…”

Section: Resultsmentioning

confidence: 99%

Lead‐Free Pyroelectric Materials for Thermal Energy Harvesting: A Comparative Study

et al. 2018

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The thermal energy harvesting potential of different pyroelectric materials including Sr0.5Ba0.5Nb2O5 (SBN), [Bi0.48Na0.4032K0.0768] Sr0.04(Ti0.975Nb0.025)O3 (BNT‐Nb), Ba0.85Sr0.15Zr0.1Ti0.9O3 (BST‐BZT), Ba0.85Ca0.15Zr0.1Ti0.9O3 (BCT‐BZT), and Ba0.9Ca0.1TiO3 (BCT) ceramics is compared. Amongst these materials, BCT is found to be best for pyroelectric energy harvesting. Open‐circuit voltages were found to be 1.7 V, 500 mV, 650 mV, 600 mV, and 400 mV for BCT, SBN, BCT‐BZT, BST‐BZT, and BNT‐Nb, respectively. BCT is further analyzed, revealing an optimum power output of 0.072 μW at the optimized cycle frequency (0.06 Hz) and at a load resistance of 18 MΩ. To improve the effectiveness of energy conversion from heat to electricity, the synchronized switch harvesting on inductor (SSHI) technique is experimentally tested on a BCT sample. It is revealed that this concept based on SSHI can significantly increase the amount of power extracted from pyroelectric materials. Compared with 0.072 μW across a standard circuit in a BCT sample, an enhanced power output of 0.16 μW and 0.14 μW is obtained using parallel and series SSHI, respectively at 0.06 Hz. The results reveal that the non‐linear processing technique based on SSHI leads to significant power improvement compared to non‐switched interface.

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Section: Resultsmentioning

confidence: 99%

Lead‐Free Pyroelectric Materials for Thermal Energy Harvesting: A Comparative Study

et al. 2018

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“…A Phillips IR lamp (250 W) and a water block were used to generate temperature fluctuations across the upper surface of coated and uncoated samples. Similar setups were close to real time applications and were explored by several researchers . The sample was heated by switching the lamp ON and OFF from 1 to 5 s by placing it 1 cm away from the sample, while it was continuously cooled through water flow (25 °C) below its surface.…”

Section: Methodsmentioning

confidence: 99%

Diesel Exhaust Emission Soot Coated Pyroelectric Materials for Improved Thermal Energy Harvesting

Azad¹,

Sharma

Vaish

2019

Global Challenges

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Pyroelectric performance is significantly improved using a coating of diesel exhaust soot. Coated pyroelectric sample (lead zirconate titanate) is exposed to a temporal temperature gradient. Under the application of infrared (IR) heating for a given temperature gradient, the maximum open circuit voltage improves more than four times, electric current across a resistance of 10 ohm improves more than six times, and the stored energy in 10 µF capacitor is enhanced by 17 times. These results are important from two aspects: 1) utilization of waste diesel exhaust soot and 2) improving energy harvesting performance of pyroelectric materials.

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“…Two wires were bound on opposite electrodes for collecting electrical output. A similar piezoelectric buzzer was used previously to study for pyroelectric energy conversion . The literature indicates that these buzzer‐shaped piezoelectric materials are able to produce strong pyroelectric signals .…”

Section: Methodsmentioning

confidence: 99%

“…The output from such setup was not so accurate because the sample may not be uniformly exposed to heating. However, such kinds of setup has also been used previously and the results from such setup will be closer to real time application …”

Section: Methodsmentioning

confidence: 99%

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Large Gain in Pyroelectric Energy Conversion through a Candle Soot Coating

et al. 2018

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A large gain in pyroelectric voltage and current when exposed to infrared radiation after candle soot coating on material surfaces is reported. A piezoelectric buzzer is selected to quantify the effect of candle soot on pyroelectric output. For a given temperature change, the peak value of the open‐circuit voltage is enhanced from 2 V to 8 V and electric current is boosted from 15 nA to 95 nA. A load capacitor is also connected through a full wave rectifier. Energy storage in a 10 μF load capacitor is increased from 5 nJ to 70 nJ.

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Optimization and improvement of thermal energy harvesting by using pyroelectric materials

Cited by 30 publications

References 15 publications

Lead‐Free Pyroelectric Materials for Thermal Energy Harvesting: A Comparative Study

Lead‐Free Pyroelectric Materials for Thermal Energy Harvesting: A Comparative Study

Diesel Exhaust Emission Soot Coated Pyroelectric Materials for Improved Thermal Energy Harvesting

Large Gain in Pyroelectric Energy Conversion through a Candle Soot Coating

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