abstract
Lithium/sodium sulfate system shows promising potential for high-temperature solid-state latent heat storage, and recent studies have begun to explore its suitability for thermal storage applications. Despite their advantages, crucial aspects that would allow their jump to the energy market have not yet been solved. Due to the novelty of these materials, their compatibility with the main heat transfer fluid (nitrate-based molten salts such as Hitec XL) has not been addressed to date. The present work addresses this problem through the in-situ formation of protective carbonate coatings. The coating formation process involves an initial carbon film deposition via thermal chemical vapor deposition (T-CVD) catalyzed by nickel (Ni). In the second stage, the carbonate coating is created in-situ through direct contact with the molten salt. This study explores the different stages of this process, including the carbon deposition on sulfates, the interaction between the molten salt and the isolated carbon film, and the overall behavior of the system.
keywords
PHASE-CHANGE MATERIALS; ENERGY-STORAGE; X-RAY; RAMAN; LINASO4; HEAT; SPECTROSCOPY; CORROSION; SPECTRA; EXERGY
subject category
Energy & Fuels
authors
Serrano, A; Silva, RM; Taeño, M; Luengo, C; Crocomo, PZ; Silva, RF; del Barrio, EP
our authors
Ricardo Manuel Fonseca Lopes da Silva
Laboratory Officer
Rui Ramos Ferreira e Silva
Associate ProfessorProjects
CICECO - Aveiro Institute of Materials (UIDB/50011/2020)
CICECO - Aveiro Institute of Materials (UIDP/50011/2020)
Associated Laboratory CICECO-Aveiro Institute of Materials (LA/P/0006/2020)
acknowledgements
This work was partially developed within the scope of the project CICECO-Aveiro Institute of Materials, UIDB/50011/2020, UIDP/50011/2020 & LA/P/0006/2020, financed by national funds through the FCT/MCTES (PIDDAC) . The authors also acknowledge the mobility grant from the "Jose Castillejo" program for young researchers (Angel Serrano) funded by the Spanish Ministerio de CienciaInnovacion y Universidades,.