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Novel high thermal conductivity alumina/salt composites for thermal energy storage: Effect of wettability on microstructure and properties.
- Source :
-
Journal of the European Ceramic Society . Jun2024, Vol. 44 Issue 6, p3953-3964. 12p. - Publication Year :
- 2024
-
Abstract
- In this work, alumina foam ceramics (AFC) were prepared by foaming method, and AFC/salt composite phase change materials were prepared by melt infiltration method using AFC as skeleton materials. The results showed that AFC had good chemical compatibility with Na 2 SO 4 and NaCl. The salt contents of AFC/Na 2 SO 4 and AFC/NaCl were 37.8 wt% and 31.7 wt%, respectively, with compressive strength of 100.1 MPa and 72.8 MPa, thermal conductivity of 5.53 W/m·K and 6.40 W/m·K, and energy density of 1129 J/g and 1019 J/g, respectively. Due to the better wettability, AFC and Na 2 SO 4 form a chimeric structure, which has better binding and bonding strength, and is not prone to molten salt leakage. AFC/ Na 2 SO 4 is expected to be applied to industrial waste heat recovery and solar thermal power generation with periodic temperature changes. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 09552219
- Volume :
- 44
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Journal of the European Ceramic Society
- Publication Type :
- Academic Journal
- Accession number :
- 175300554
- Full Text :
- https://doi.org/10.1016/j.jeurceramsoc.2024.01.063