Direct measurement of electrocaloric effect in P(VDF-TrFE-CFE) film using infrared imaging

Ashwath Aravindhan; Pierre Lheritier; Alvar Torelló; Uros Prah; Youri Nouchokgwe; Asmaa El Moul; Xavier Chevalier; Fabrice Domingues Dos Santos; Emmanuel Defay; Veronika Kovacova

Journal of Materiomics (Mar 2023)

Direct measurement of electrocaloric effect in P(VDF-TrFE-CFE) film using infrared imaging

Ashwath Aravindhan,
Pierre Lheritier,
Alvar Torelló,
Uros Prah,
Youri Nouchokgwe,
Asmaa El Moul,
Xavier Chevalier,
Fabrice Domingues Dos Santos,
Emmanuel Defay,
Veronika Kovacova

Affiliations

Ashwath Aravindhan: Materials Research and Technology Department, Luxembourg Institute of Science and Technology (LIST), 41 Rue du Brill, L-4422, Belvaux, Luxembourg; University of Luxembourg, 2 Avenue de l’Université, Esch-sur-Alzette, L-4365, Luxembourg
Pierre Lheritier: Materials Research and Technology Department, Luxembourg Institute of Science and Technology (LIST), 41 Rue du Brill, L-4422, Belvaux, Luxembourg
Alvar Torelló: Materials Research and Technology Department, Luxembourg Institute of Science and Technology (LIST), 41 Rue du Brill, L-4422, Belvaux, Luxembourg; University of Luxembourg, 2 Avenue de l’Université, Esch-sur-Alzette, L-4365, Luxembourg
Uros Prah: Materials Research and Technology Department, Luxembourg Institute of Science and Technology (LIST), 41 Rue du Brill, L-4422, Belvaux, Luxembourg
Youri Nouchokgwe: Materials Research and Technology Department, Luxembourg Institute of Science and Technology (LIST), 41 Rue du Brill, L-4422, Belvaux, Luxembourg; University of Luxembourg, 2 Avenue de l’Université, Esch-sur-Alzette, L-4365, Luxembourg
Asmaa El Moul: Materials Research and Technology Department, Luxembourg Institute of Science and Technology (LIST), 41 Rue du Brill, L-4422, Belvaux, Luxembourg
Xavier Chevalier: Arkema – Piezotech CRRA, Rue Henri Moissan, 69493, Pierre Benite Cedex, France
Fabrice Domingues Dos Santos: Arkema – Piezotech CRRA, Rue Henri Moissan, 69493, Pierre Benite Cedex, France
Emmanuel Defay: Materials Research and Technology Department, Luxembourg Institute of Science and Technology (LIST), 41 Rue du Brill, L-4422, Belvaux, Luxembourg; Corresponding author.
Veronika Kovacova: Materials Research and Technology Department, Luxembourg Institute of Science and Technology (LIST), 41 Rue du Brill, L-4422, Belvaux, Luxembourg; Corresponding author.

Journal volume & issue: Vol. 9, no. 2
pp. 256 – 260

Abstract

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Poly (vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) P(VDF-TrFE-CFE) is a relaxor ferroelectric polymer, which exhibits a temperature-independent electrocaloric effect at room temperature. In this work, the electrocaloric effect in P(VDF-TrFE-CFE) film was directly analysed using infrared imaging. P(VDF-TrFE-CFE) 64.8%/27.4%/7.8% (in mole) film of (15 ± 1) μm thickness was deposited on polyethylene naphthalate substrate. Direct ECE of P(VDF-TrFE-CFE) film was measured from 15 to 35 °C at different electric fields. A maximum adiabatic temperature change (ΔTad) of 3.58 K was measured during the cooling cycle at a field of 100 V/μm at 30 °C. Finite element analysis of temperature dissipation through the sample estimated that the actual temperature change within P(VDF-TrFE-CFE) film was 4.3 K. Despite the thermal mass of the substrate, a substantial ECE was observed in P(VDF-TrFE-CFE) films. This electrocaloric terpolymer composition could be of interest for electrocaloric cooling applications.

Published in Journal of Materiomics

ISSN: 2352-8478 (Print); 2352-8486 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.sciencedirect.com/journal/journal-of-materiomics

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