Smith, J., Werner-Hörmann, J., & Weinberger, P. (2025). TCMs for versatile thermal energy storage - from salt hydrates to oxides. In Book of Abstracts : JTACC (pp. 249–249).
E163-01-3 - Forschungsgruppe Magneto- und Thermochemie
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Erschienen in:
Book of Abstracts : JTACC
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ISBN:
978-963-664-142-9
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Datum (veröffentlicht):
25-Jun-2025
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Veranstaltungsname:
4th Journal of Thermal Analysis and Calorimetry Conference & 10th V4 (Joint Czech-Hungarian-Polish-Slovakian) Thermoanalytical Conference (JTACC 2025)
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Veranstaltungszeitraum:
24-Jun-2025 - 27-Jun-2025
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Veranstaltungsort:
Budapest, Ungarn
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Umfang:
1
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Keywords:
thermochemical energy storage; salt hydrates; oxides
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Abstract:
Thermal energy storage can play a crucial role in supporting the European Union Green Deal via reducing the need of fossil fuels for industrial process heat as well as domestic heating and warm water supply. In contrast to some applications based on sensible heat or latent heat using phase change materials (PCMs) already on the market the principle of thermochemical energy storage based on reversible chemical solid-gas reactions is still at a rather low technology readiness level [1]. However, several classes of compounds have been identified via a systematic algorithmic database search as promising candidates [2]. Among these the salt hydrates represent a peculiar class of compounds we investigated in the last decade. Presenting a few examples of our research the challenges and chances with respect to cycle stability [3] as well as thermal property tuning [4] are discussed. Furthermore, there is another class of compounds using water for a reversible thermochemical energy storage material, i.e. the
metal oxides being hydrated to metal hydroxides. For example, for medium temperature applications the system MgO + H2O ⇌ Mg(OH)2 is presented with respect to the performance enhancement we could achieve via Ca-doping [5].
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Forschungsinfrastruktur:
Röntgenzentrum Universitäre Service-Einrichtung für Transmissionselektronenmikroskopie
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Projekttitel:
Entwicklung und Pilotdemonstration von Wärme-Upgrade-Technologien mit Zulauftemperaturen im Bereich 150°C bis 250°C: 101103966 (European Commission) A LONG DURATION AND CUTTING-EDGE THERMOCHEMICAL HEAT STORAGE AND UPGRADING TECHNOLOGY FOR HEAT AND POWER APPLICATIONS: 101192888 (European Commission)
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Forschungsschwerpunkte:
Materials Characterization: 50% Climate Neutral, Renewable and Conventional Energy Supply Systems: 50%