Improved Thermophysical and Mechanical Properties in LiNaSO<sub>4</sub> Composites for Thermal Energy Storage
Solid-solid phase-change materials have great potential for developing compact and low-cost thermal storage systems. The solid-state nature of these materials enables the design of systems analogous to those based on natural rocks but with an extraordinarily higher energy density. In this scenario,...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-12-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/14/1/78 |
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| author | Maria Taeño Ariba Adnan Cristina Luengo Ángel Serrano Jean-Luc Dauvergne Paola Crocomo Ali Huerta Stefania Doppiu Elena Palomo del Barrio |
| author_facet | Maria Taeño Ariba Adnan Cristina Luengo Ángel Serrano Jean-Luc Dauvergne Paola Crocomo Ali Huerta Stefania Doppiu Elena Palomo del Barrio |
| author_sort | Maria Taeño |
| collection | DOAJ |
| description | Solid-solid phase-change materials have great potential for developing compact and low-cost thermal storage systems. The solid-state nature of these materials enables the design of systems analogous to those based on natural rocks but with an extraordinarily higher energy density. In this scenario, the evaluation and improvement of the mechanical and thermophysical properties of these solid-solid PCMs are key to exploiting their full potential. In this study, LiNaSO<sub>4</sub>-based composites, comprising porous MgO and expanded graphite (EG) as the dispersed phases and LiNaSO<sub>4</sub> as the matrix, have been prepared with the aim of enhancing the thermophysical and mechanical properties of LiNaSO<sub>4</sub>. The characteristic structure of MgO and the high degree of crystallinity of the EG600 confer on the LiNaSO<sub>4</sub> sample mechanical stability, which leads to an increase in the Young’s modulus (almost three times higher) compared to the pure LiNaSO<sub>4</sub> sample. These materials are proposed as a suitable candidate for thermal energy storage applications at high temperatures (400–550 °C). The addition of 5 wt.% of MgO or 5% of EG had a minor influence on the solid-solid phase change temperature and enthalpy; however, other thermal properties such as thermal conductivity or specific heat capacity were increased, extending the scope of PCMs use. |
| first_indexed | 2024-03-08T15:00:57Z |
| format | Article |
| id | doaj.art-fb181167432f43339c46184e796b29d5 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-08T15:00:57Z |
| publishDate | 2023-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-fb181167432f43339c46184e796b29d52024-01-10T15:05:01ZengMDPI AGNanomaterials2079-49912023-12-011417810.3390/nano14010078Improved Thermophysical and Mechanical Properties in LiNaSO<sub>4</sub> Composites for Thermal Energy StorageMaria Taeño0Ariba Adnan1Cristina Luengo2Ángel Serrano3Jean-Luc Dauvergne4Paola Crocomo5Ali Huerta6Stefania Doppiu7Elena Palomo del Barrio8Center for Cooperative Research on Alternative Energies (CIC Energigune), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, SpainCenter for Cooperative Research on Alternative Energies (CIC Energigune), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, SpainCenter for Cooperative Research on Alternative Energies (CIC Energigune), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, SpainCenter for Cooperative Research on Alternative Energies (CIC Energigune), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, SpainCenter for Cooperative Research on Alternative Energies (CIC Energigune), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, SpainCenter for Cooperative Research on Alternative Energies (CIC Energigune), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, SpainCenter for Cooperative Research on Alternative Energies (CIC Energigune), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, SpainCenter for Cooperative Research on Alternative Energies (CIC Energigune), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, SpainCenter for Cooperative Research on Alternative Energies (CIC Energigune), Basque Research and Technology Alliance (BRTA), Alava Technology Park, Albert Einstein 48, 01510 Vitoria-Gasteiz, SpainSolid-solid phase-change materials have great potential for developing compact and low-cost thermal storage systems. The solid-state nature of these materials enables the design of systems analogous to those based on natural rocks but with an extraordinarily higher energy density. In this scenario, the evaluation and improvement of the mechanical and thermophysical properties of these solid-solid PCMs are key to exploiting their full potential. In this study, LiNaSO<sub>4</sub>-based composites, comprising porous MgO and expanded graphite (EG) as the dispersed phases and LiNaSO<sub>4</sub> as the matrix, have been prepared with the aim of enhancing the thermophysical and mechanical properties of LiNaSO<sub>4</sub>. The characteristic structure of MgO and the high degree of crystallinity of the EG600 confer on the LiNaSO<sub>4</sub> sample mechanical stability, which leads to an increase in the Young’s modulus (almost three times higher) compared to the pure LiNaSO<sub>4</sub> sample. These materials are proposed as a suitable candidate for thermal energy storage applications at high temperatures (400–550 °C). The addition of 5 wt.% of MgO or 5% of EG had a minor influence on the solid-solid phase change temperature and enthalpy; however, other thermal properties such as thermal conductivity or specific heat capacity were increased, extending the scope of PCMs use.https://www.mdpi.com/2079-4991/14/1/78solid-solid PCMsmechanical propertiesthermal energy storageMgOEG600thermal conductivity |
| spellingShingle | Maria Taeño Ariba Adnan Cristina Luengo Ángel Serrano Jean-Luc Dauvergne Paola Crocomo Ali Huerta Stefania Doppiu Elena Palomo del Barrio Improved Thermophysical and Mechanical Properties in LiNaSO<sub>4</sub> Composites for Thermal Energy Storage Nanomaterials solid-solid PCMs mechanical properties thermal energy storage MgO EG600 thermal conductivity |
| title | Improved Thermophysical and Mechanical Properties in LiNaSO<sub>4</sub> Composites for Thermal Energy Storage |
| title_full | Improved Thermophysical and Mechanical Properties in LiNaSO<sub>4</sub> Composites for Thermal Energy Storage |
| title_fullStr | Improved Thermophysical and Mechanical Properties in LiNaSO<sub>4</sub> Composites for Thermal Energy Storage |
| title_full_unstemmed | Improved Thermophysical and Mechanical Properties in LiNaSO<sub>4</sub> Composites for Thermal Energy Storage |
| title_short | Improved Thermophysical and Mechanical Properties in LiNaSO<sub>4</sub> Composites for Thermal Energy Storage |
| title_sort | improved thermophysical and mechanical properties in linaso sub 4 sub composites for thermal energy storage |
| topic | solid-solid PCMs mechanical properties thermal energy storage MgO EG600 thermal conductivity |
| url | https://www.mdpi.com/2079-4991/14/1/78 |
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