Structural and dehydriding properties of Ca(BH4)2

M. Aoki, K. Miwa, T. Noritake, N. Ohba, M. Matsumoto, Haiwen Li, Y. Nakamori, S. Towata, S. Orimo

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63 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)601-605
Number of pages5
JournalApplied Physics A: Materials Science and Processing
Volume92
Issue number3
DOIs
Publication statusPublished - Aug 1 2008
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Materials Science(all)

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