AZNAR, Araceli; NÉGRIER, Philippe; PLANES, Antoni; MAÑOSA, Lluís; STERN-TAULATS, Enric; MOYA, Xavier; BARRIO, María; TAMARIT, Josep-Lluís; LLOVERAS, Pol

doi:10.1016/j.apmt.2021.101023

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

AZNAR, Araceli
Universitat Politècnica de Catalunya = Université polytechnique de Catalogne [Barcelona] [UPC]

NÉGRIER, Philippe
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

PLANES, Antoni
Universitat de Barcelona [UB]

Langue

Article de revue

Ce document a été publié dans

Applied Materials Today. 2021, vol. 23, p. 101023

Elsevier

Résumé en anglais

Plastic crystals undergo phase transitions with unusually large volume and entropy changes related to strong molecular orientational disordering. These features have led to a resurgent interest in these materials because recently they have shown great potential in solid-state cooling applications driven by pressure. Here we demonstrate that two plastic crystals derived from adamantane-1-Br-adamantane and 1-Cl-adamantane-undergo colossal reversible barocaloric effects under moderate pressure changes in a wide temperature span near room temperature thanks to a relatively small hysteresis and very high sensitivity of the transition temperature to pressure. In particular, 1-Cl-adamantane displays an optimal operational temperature range covering from ~40 K below and up to room temperature, and under a pressure change of 1 kbar this compound outperforms any other barocaloric material known so far. Our work gives strong support to plastic crystals as best candidates for barocaloric cooling. We also provide insight into the physical origin of the entropy changes through the analysis of the disorder on the involved phases.< Réduire

Mots clés en anglais

Barocaloric effects

plastic crystals

1-bromoadamantane

1-chloroadamantane

pressure

entropy

Métadonnées

Licence d’utilisation du document

Reversible colossal barocaloric effects near room temperature in 1-X-adamantane (X=Cl, Br) plastic crystals

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en anglais

DOI

Origine

Unités de recherche