Journal
MATERIALS
Volume 13, Issue 4, Pages -Publisher
MDPI
DOI: 10.3390/ma13040810
Keywords
phase change materials; latent heat storage; thermal energy storage; sustainability; energy; esters; diesters; PCM; LHS; TES
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Funding
- Swiss National Science Foundation (SNSF) [PZENP2_173636]
- Swiss National Science Foundation (SNF) [PZENP2_173636] Funding Source: Swiss National Science Foundation (SNF)
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Esters present several advantages when compared to traditional materials used for thermal energy storage, amongst which are better sustainability and greater chemical stability. However, at present, their thermal properties remain mostly unknown or not well documented. In this study, 12 diesters from four dicarboxylic acids (oxalic, succinic, suberic, sebacic) and three alcohols (methanol, 1-pentanol, 1-decanol) have been assessed as bio-based phase change materials for thermal energy storage. All diesters have been synthesized via Fischer esterification to high purities, and their chemical structures, as well as thermal properties, have been fully characterized. The diesters investigated show phase change transitions in a low-mid temperature range between -32 and 46 degrees C with maximum enthalpies of 172 J/g and show higher degrees of supercooling compared to fatty monoesters. Similarly to other esters classes, some trends correlating the chemical structures to the thermal properties were identified, which would allow for the development of property prediction tools.
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