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

作　　者：Ashwath Aravindhan Pierre Lheritier Alvar Torello Uros Prah Youri Nouchokgwe Asmaa El Moul Xavier Chevalier Fabrice Domingues Dos Santos Emmanuel Defay Veronika Kovacova 

机构地区：[1]Materials Research and Technology Department,Luxembourg Institute of Science and Technology(LIST),41 Rue du Brill,L-4422,Belvaux,Luxembourg [2]University of Luxembourg,2 Avenue de l’Universit
e,Esch-sur-Alzette,L-4365,Luxembourg [3]Arkema e Piezotech CRRA,Rue Henri Moissan,69493,Pierre Benite Cedex,France

出　　处：《Journal of Materiomics》2023年第2期256-260,共5页无机材料学学报（英文）

基　　金：Fonds National de la Recherche(FNR)of Luxembourg under the grant THERMODIMAT/C20/MS/14718071//Defay,CAMELHEAT/C17/MS/11703691/Defay,MASSENA PRIDE/MASSENA/15/10935404/Defay Siebentritt and CALPOL BRIDGES 2O2O/MS/15410586/Defay.

摘　　要：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)mm 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(DTad)of 3.58 K was measured during the cooling cycle at a field of 100 V/mm 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.

关 键 词：Direct measurement Electrocaloric effect P(VDF-TrFE-CFE) Relaxor ferroelectric polymer Infrared imaging Finite element analysis 

分 类 号：TN21[电子电信—物理电子学] TP391.41[自动化与计算机技术—计算机应用技术]