Synthesis and hydrogen storage properties of a single-phase magnesium borohydride Mg(BH4)2

Hai Wen Li, Kentaro Kikuchi, Toyoto Sato, Yuko Nakamori, Nobuko Ohba, Masakazu Aoki, Kazutoshi Miwa, Shin Ichi Towata, Shin Ichi Orimo

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

A single phase Mg(BH4)2 was successfully synthesized and its hydrogen storage properties were systematically investigated. Depending on the synthesis conditions, Mg(BH4)2 forms low- and high-temperature phases with different crystal structures. The dehydriding reaction of Mg(BH4)2 starts at approximately 500 K. and 14.4mass% of hydrogen is released through a multi-step reaction. Furthermore 6.1 mass% of hydrogen can be rehydrided for the sample of Mg(BH4) 2 after the dehydriding reaction, through the formation of a possible intermediate compound such as MgB12H12.

Original languageEnglish
Pages (from-to)2224-2228
Number of pages5
JournalMaterials Transactions
Volume49
Issue number10
DOIs
Publication statusPublished - 2008 Oct 1

Keywords

  • Borohydride
  • Complex hydride
  • Dehydriding
  • Hydrogen storage
  • Synthesis

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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