MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
Synthesis and Hydrogen Storage Properties of a Single-Phase Magnesium Borohydride Mg(BH4)2
Hai-Wen LiKentaro KikuchiToyoto SatoYuko NakamoriNobuko OhbaMasakazu AokiKazutoshi MiwaShin-ichi TowataShin-ichi Orimo
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2008 Volume 49 Issue 10 Pages 2224-2228

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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 14.4 mass% 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.

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© 2008 The Japan Institute of Metals and Materials
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