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Ferroelectric terpolymer films with enhanced cooling efficiency: An integrated approach considering electrocaloric response and dielectric losses

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  • Additional Information
    • Contributors:
      Systèmes et Applications des Technologies de l'Information et de l'Energie (SATIE); École normale supérieure - Rennes (ENS Rennes)-Conservatoire National des Arts et Métiers CNAM (CNAM)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Ecole Normale Supérieure Paris-Saclay (ENS Paris Saclay)-Université Gustave Eiffel-CY Cergy Paris Université (CY); ANR-10-LABX-0032,LaSIPS,LABORATORY FOR SYSTEMS AND ENGINEERING OF PARIS SACLAY(2010); ANR-20-CE05-0044,ECOOL,Réfrigération électrocalorique(2020); ANR-11-IDEX-0003,IPS,Idex Paris-Saclay(2011)
    • Publication Information:
      HAL CCSD
      American Physical Society
    • Publication Date:
      2024
    • Collection:
      Université Paris Seine: ComUE (HAL)
    • Abstract:
      International audience ; In response to the growing demand for more efficient and compact refrigeration and energy conversion devices, electrocaloric poly(vinylidene fluoride-trifluoroethylene-chlorofluoroethylene) is among the most promising active substances. However, despite its high electrocaloric response, the maximum efficiency achievable over a cooling cycle is hampered by losses. To overcome this major limitation, losses have been reduced by using an electrothermal poling treatment as well as by controlling the surface roughness. The upper bound of the efficiency computed over a thermodynamic cycle mimicking the working conditions of an actual cooling device is increased from 1% to 10% of the Carnot efficiency. This represents a major improvement in enhancing ferroelectric materials for advanced energy applications.
    • Accession Number:
      10.1103/PhysRevApplied.22.044059
    • Online Access:
      https://hal.science/hal-04759924
      https://hal.science/hal-04759924v1/document
      https://hal.science/hal-04759924v1/file/Zeggai-et-al-preprint.pdf
      https://doi.org/10.1103/PhysRevApplied.22.044059
    • Rights:
      info:eu-repo/semantics/OpenAccess
    • Accession Number:
      edsbas.1264CFEF