ACHCHAQ, Fouzia; PALOMO DEL BARRIO, Elena; LEBRAUD, Eric; PECHEV, Stanislav; TOUTAIN, Jean

doi:10.1016/j.jpcs.2019.04.001

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ACHCHAQ, Fouzia

PALOMO DEL BARRIO, Elena
CICEnergigune

LEBRAUD, Eric
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Article de revue

Ce document a été publié dans

Journal of Physics and Chemistry of Solids. 2019-08, vol. 131, p. 173-179

Elsevier

Résumé en anglais

In this study, the LiBr/LiOH phase diagram and the key related thermodynamic properties of its specific compounds were theoretically and experimentally estimated (by thermodynamic modeling and differential scanning calorimetry experiments, respectively) and compared with previously reported results. The peritectic compound Li4Br(OH)3 was identified as a highly promising candidate for heat storage applications at around 300 °C, mainly because of its outstanding energy density. As a precaution, the two limiting cases of thermodynamic solidification simulations (equilibrium and Scheil–Gulliver cooling conditions) were considered to confirm the relevance of synthesizing and experimentally studying this new potential heat storage material. After many tests and adjustments, a suitable synthesis protocol was developed and validated for characterizing the Li4Br(OH)3 compound using the X-ray powder diffraction technique. Preliminary thermal analysis was also performed for the successfully synthesized peritectic compound to confirm its high potential as a heat storage material. Our results indicate that it would be useful to comprehensive analyze the thermophysical properties of this material to assess its capacity for utilization in thermal energy storage applications.< Réduire

Mots clés en anglais

Energy storage

LiBr/LiOH phase diagram

Peritectic compound

Thermodynamic property

DOI

http://dx.doi.org/10.1016/j.jpcs.2019.04.001

Project ANR

Composés péritectiques pour le stockage compact de l'énergie thermique à haute température

Origine

Importé de hal

Unités de recherche

Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB) - UMR 5026