Developed materials for thermal energy storage: synthesis and characterization

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Heat storage or thermal energy storage is one of the key technologies towards an efficient use of renewable energy resources, particulary the thermochemical heat storage looks promising, but the progress has not yet been succeeded. Therefore our research group focuses on the development of a heat storage system called "thermal battery" for private households and industry applications. On the one hand especially thermochemical reactions have a high potential for high energy density and long term storage. On the other hand the used materials in particular hygroscopic salts are related to disadvantages such as agglomeration, storage capacity loss over cycling or slow reaction kinetics. Those disadvantages are caused by deliquescence and by the occurrence of side reactions, among other effects. We combined the optimization of mixing of salt hydrates and impregnation of carriers to overcome these disadvantages. This paper reports on synthesis of thermochemical materials and comparison of the material properties energy density and effective thermal conductivity.
Original languageEnglish
JournalEnergy Procedia
Pages (from-to)96-99
Number of pages4
Publication statusPublished - 01.01.2014

Bibliographical note

Funding Information:
We thank Dagmar Schuchardt, who have helped mixture preparation, and Melanie Böhme, who has assisted in evaluation of the data. Rammelberg, H. U. thanks the Friedrich-Ebert-Stiftung for financial support. We gratefully acknowledge the financial support of this project by the European Regional Development Fund (EFRE).

Publisher Copyright:
© 2014 The Authors.

    Research areas

  • Chemistry - composites design, thermal characterization, Thermal conductivity
  • Energy research - Thermal energy storage, Heat and mass transfer enhancement