The Role of Ca(BH4)2 Polymorphs

This study compares the structure and decomposition behaviors of the α, β, and γ polymorphs of Ca(BH4)2 for hydrogen storage. Samples with different polymorphic contents are characterized using powder X-ray diffraction and vibrational spectroscopy. Decomposition paths and formation of decomposition...

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Bibliographic Details
Published in:Journal of physical chemistry. C 2012-06, Vol.116 (25), p.13472-13479
Main Authors: Llamas-Jansa, Isabel, Friedrichs, Oliver, Fichtner, Maximilian, Bardaji, Elisa Gil, Züttel, Andreas, Hauback, Bjørn C
Format: Article
Language:English
Subjects:
Condensed matter: structure, mechanical and thermal properties
Crystalline state (including molecular motions in solids)
Crystallographic aspects of phase transformations
pressure effects
Equations of state, phase equilibria, and phase transitions
Exact sciences and technology
Physics
Solubility, segregation, and mixing
phase separation
Structure of solids and liquids
crystallography
Structure of specific crystalline solids
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Summary:This study compares the structure and decomposition behaviors of the α, β, and γ polymorphs of Ca(BH4)2 for hydrogen storage. Samples with different polymorphic contents are characterized using powder X-ray diffraction and vibrational spectroscopy. Decomposition paths and formation of decomposition products are monitored by differential scanning calorimetry and temperature programed desorption as well as in situ synchrotron radiation powder diffraction. Vibrational spectroscopy in the
ISSN:1932-7447
1932-7455
DOI:10.1021/jp211289s