期刊
APPLIED SCIENCES-BASEL
卷 10, 期 2, 页码 -出版社
MDPI
DOI: 10.3390/app10020453
关键词
composite foams; thermochemical energy storage; salt hydrate; stability; cycling; sorption
类别
资金
- Ministerio de Ciencia, Innovacion y Universidades de Espana [RTI2018-093849-B-C31]
- ICREA under the ICREA Academia program
Salt hydrates, such as MgSO4 center dot 7H(2)O, are considered attractive materials for thermal energy storage, thanks to their high theoretical storage density. However, pure salt hydrates present some challenges in real application due to agglomeration, corrosion and swelling problems during hydration/dehydration cycles. In order to overcome these limitations, a composite material based on silicone vapor-permeable foam filled with the salt hydrate is here presented. For its characterization, a real-time in situ environmental scanning electron microscopy (ESEM) investigation was carried out in controlled temperature and humidity conditions. The specific set-up was proposed as an innovative method in order to evaluate the morphological evolution of the composite material during the hydrating and dehydrating stages of the salt. The results evidenced an effective micro-thermal stability of the material. Furthermore, dehydration thermogravimetric/differential scanning calorimetric (TG/DSC) analysis confirmed the improved reactivity of the realized composite foam compared to pure MgSO4 center dot 7H(2)O.
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