Giant electrocaloric materials energy efficiency in highly ordered lead scandium tantalate

Electrocaloric materials are promising working bodies for caloric-based technologies, suggested as an efficient alternative to the vapor compression systems. However, their materials efficiency defined as the ratio of the exchangeable electrocaloric heat to the work needed to trigger this heat remai...

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Autores principales: Nouchokgwe, Youri, Lheritier, Pierre, Hong, Chang-Hyo, Torelló, Alvar, Faye, Romain, Jo, Wook, Bahl, Christian R. H., Defay, Emmanuel
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8172889/
https://www.ncbi.nlm.nih.gov/pubmed/34078891
http://dx.doi.org/10.1038/s41467-021-23354-y
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author Nouchokgwe, Youri
Lheritier, Pierre
Hong, Chang-Hyo
Torelló, Alvar
Faye, Romain
Jo, Wook
Bahl, Christian R. H.
Defay, Emmanuel
author_facet Nouchokgwe, Youri
Lheritier, Pierre
Hong, Chang-Hyo
Torelló, Alvar
Faye, Romain
Jo, Wook
Bahl, Christian R. H.
Defay, Emmanuel
author_sort Nouchokgwe, Youri
collection PubMed
description Electrocaloric materials are promising working bodies for caloric-based technologies, suggested as an efficient alternative to the vapor compression systems. However, their materials efficiency defined as the ratio of the exchangeable electrocaloric heat to the work needed to trigger this heat remains unknown. Here, we show by direct measurements of heat and electrical work that a highly ordered bulk lead scandium tantalate can exchange more than a hundred times more electrocaloric heat than the work needed to trigger it. Besides, our material exhibits a maximum adiabatic temperature change of 3.7 K at an electric field of 40 kV cm(−1). These features are strong assets in favor of electrocaloric materials for future cooling devices.
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spelling pubmed-81728892021-06-07 Giant electrocaloric materials energy efficiency in highly ordered lead scandium tantalate Nouchokgwe, Youri Lheritier, Pierre Hong, Chang-Hyo Torelló, Alvar Faye, Romain Jo, Wook Bahl, Christian R. H. Defay, Emmanuel Nat Commun Article Electrocaloric materials are promising working bodies for caloric-based technologies, suggested as an efficient alternative to the vapor compression systems. However, their materials efficiency defined as the ratio of the exchangeable electrocaloric heat to the work needed to trigger this heat remains unknown. Here, we show by direct measurements of heat and electrical work that a highly ordered bulk lead scandium tantalate can exchange more than a hundred times more electrocaloric heat than the work needed to trigger it. Besides, our material exhibits a maximum adiabatic temperature change of 3.7 K at an electric field of 40 kV cm(−1). These features are strong assets in favor of electrocaloric materials for future cooling devices. Nature Publishing Group UK 2021-06-02 /pmc/articles/PMC8172889/ /pubmed/34078891 http://dx.doi.org/10.1038/s41467-021-23354-y Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Nouchokgwe, Youri
Lheritier, Pierre
Hong, Chang-Hyo
Torelló, Alvar
Faye, Romain
Jo, Wook
Bahl, Christian R. H.
Defay, Emmanuel
Giant electrocaloric materials energy efficiency in highly ordered lead scandium tantalate
title Giant electrocaloric materials energy efficiency in highly ordered lead scandium tantalate
title_full Giant electrocaloric materials energy efficiency in highly ordered lead scandium tantalate
title_fullStr Giant electrocaloric materials energy efficiency in highly ordered lead scandium tantalate
title_full_unstemmed Giant electrocaloric materials energy efficiency in highly ordered lead scandium tantalate
title_short Giant electrocaloric materials energy efficiency in highly ordered lead scandium tantalate
title_sort giant electrocaloric materials energy efficiency in highly ordered lead scandium tantalate
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8172889/
https://www.ncbi.nlm.nih.gov/pubmed/34078891
http://dx.doi.org/10.1038/s41467-021-23354-y
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