Dehydrogenation behavior of LiBH4/CaH2 composite with NbF5

Jae Hag Lim, Jae Hyeok Shim, Young Su Lee, Young Whan Cho, Joonho Lee

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

The dehydrogenation behavior of 6LiBH4 + CaH2 + 0.2NbF5 composite has been investigated. It is demonstrated that the addition of NbF5 is effective in lowering the dehydrogenation temperature of this composite. The composite starts dehydrogenation before the melting of LiBH4 and releases 9.1 wt.% hydrogen up to 400 °C. The equilibrium dehydrogenation temperature under 1 bar of hydrogen is estimated to be 309 °C with a reaction enthalpy change of 56.5 kJ mol-1 H2, which is consistent with thermodynamic calculation. Crown

Original languageEnglish
Pages (from-to)1251-1254
Number of pages4
JournalScripta Materialia
Volume59
Issue number12
DOIs
Publication statusPublished - 2008 Dec 1

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Keywords

  • Differential scanning calorimetry
  • Hydrides
  • Hydrogen storage
  • Mechanical milling
  • Thermodynamics

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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