Structural and dehydriding properties of Ca(BH4)2 |
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| Authors: | M. Aoki K. Miwa T. Noritake N. Ohba M. Matsumoto H.-W. Li Y. Nakamori S. Towata S. Orimo |
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| Affiliation: | (1) Toyota Central R&D Labs., Inc., Nagakute, Aichi 480-1192, Japan;(2) Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan |
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| Abstract: | ![]()
We have investigated the structural and dehydriding properties of Ca(BH4)2. It was found that Ca(BH4)2 undergoes a structural phase transformation from an orthorhombic low-temperature (LT) modification into a tetragonal high-temperature (HT) modification between 433 K and 523 K. The amount of hydrogen desorbed from Ca(BH4)2 during the pressure–composition (p–c) isotherm measurement was 5.9 mass%. This hydrogen desorption is caused by the partial dehydrogenation of Ca(BH4)2 accompanied by the formation of CaH2 and orthorhombic intermediate phases. |
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| Keywords: | PACS 81.05.Zx 71.20.Ps 82.30.-b |
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