Heat capacity and thermodynamic properties of alkali and alkali-earth borohydrides

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  • Erika M. Dematteis, University of Turin
  • ,
  • Steffen R. Jensen
  • ,
  • Torben R. Jensen
  • Marcello Baricco, University of Turin

In this work, the above room temperature heat capacity for different polymorphs of alkali and alkali-earth (i.e. Na, K, Rb, Cs, Mg, Ca) borohydrides has been measured by DSC as a function of temperature. The above room temperature measured Cp values have been compared with available extrapolated literature data, and they have been modelled as a function of temperature according to the Calphad method. The variations of Cp values for different polymorphs were studied in details and they have been related to the corresponding crystal structures, considering the mobility of the BH4 group. From the whole set of assessed thermodynamic data, possible correlations with dynamics and structural properties have been estimated.

Original languageEnglish
Article number106055
JournalJournal of Chemical Thermodynamics
Volume143
ISSN0021-9614
DOIs
Publication statusPublished - Apr 2020

    Research areas

  • Borohydride, Complex hydrides, Heat capacity, Hydrogen storage, Thermodynamics

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ID: 178746955