Magnesium borohydride: A new hydrogen storage material

T. Matsunaga; F. Buchter; K. Miwa; S. Towata; S. Orimo; A. Züttel

doi:10.1016/j.renene.2007.05.004

Magnesium borohydride: A new hydrogen storage material

T. Matsunaga, F. Buchter, K. Miwa, S. Towata, S. Orimo, A. Züttel

Research output: Contribution to journal › Article › peer-review

82 Citations (Scopus)

Abstract

Magnesium borohydride (Mg(BH₄)₂) is a promising material for hydrogen storage because of its high gravimetric storage density (15.0 mass%). We intended to synthesize Mg(BH₄)₂ by decomposition reaction of LiBH₄ with MgCl₂ by heat treatment without using a solvent, where the product consists of LiCl and a compound of magnesium, boron and hydrogen. Hydrogen desorption temperature of the product is approximately 100 K lower than that of LiBH₄ and the decomposition consists of a two-step reaction. The products of the 1st and 2nd decomposition reactions are MgH₂ and Mg, respectively. This result indicates the following two-step reaction (1st reaction: Mg(BH₄)₂→MgH₂+2B+3H₂, 2nd reaction: MgH₂→Mg+H₂). The first decomposition peak is dominant and is around 563 K. The 2nd decomposition occurs at the temperature greater than 590 K.

Original language	English
Pages (from-to)	193-196
Number of pages	4
Journal	Renewable Energy
Volume	33
Issue number	2
DOIs	https://doi.org/10.1016/j.renene.2007.05.004
Publication status	Published - 2008 Feb

Keywords

Hydrogen absorbing materials
Thermal analysis
Thermodynamic properties

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.renene.2007.05.004

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title = "Magnesium borohydride: A new hydrogen storage material",

abstract = "Magnesium borohydride (Mg(BH4)2) is a promising material for hydrogen storage because of its high gravimetric storage density (15.0 mass%). We intended to synthesize Mg(BH4)2 by decomposition reaction of LiBH4 with MgCl2 by heat treatment without using a solvent, where the product consists of LiCl and a compound of magnesium, boron and hydrogen. Hydrogen desorption temperature of the product is approximately 100 K lower than that of LiBH4 and the decomposition consists of a two-step reaction. The products of the 1st and 2nd decomposition reactions are MgH2 and Mg, respectively. This result indicates the following two-step reaction (1st reaction: Mg(BH4)2→MgH2+2B+3H2, 2nd reaction: MgH2→Mg+H2). The first decomposition peak is dominant and is around 563 K. The 2nd decomposition occurs at the temperature greater than 590 K.",

keywords = "Hydrogen absorbing materials, Thermal analysis, Thermodynamic properties",

author = "T. Matsunaga and F. Buchter and K. Miwa and S. Towata and S. Orimo and A. Z{\"u}ttel",

note = "Funding Information: This study was partially supported by the New Energy and Industrial Technology Development Organization (NEDO), International Joint Research under the “Development for Safe Utilization and Infrastructure of hydrogen” Project (2005–2006) and the Swiss Federal Office of Energy (BFE) project “Hydrogen storage in metal- and complex hydrides”, No. 100324 (2003–2006).",

year = "2008",

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doi = "10.1016/j.renene.2007.05.004",

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T2 - A new hydrogen storage material

AU - Matsunaga, T.

AU - Buchter, F.

AU - Miwa, K.

AU - Towata, S.

AU - Orimo, S.

AU - Züttel, A.

N1 - Funding Information: This study was partially supported by the New Energy and Industrial Technology Development Organization (NEDO), International Joint Research under the “Development for Safe Utilization and Infrastructure of hydrogen” Project (2005–2006) and the Swiss Federal Office of Energy (BFE) project “Hydrogen storage in metal- and complex hydrides”, No. 100324 (2003–2006).

PY - 2008/2

Y1 - 2008/2

N2 - Magnesium borohydride (Mg(BH4)2) is a promising material for hydrogen storage because of its high gravimetric storage density (15.0 mass%). We intended to synthesize Mg(BH4)2 by decomposition reaction of LiBH4 with MgCl2 by heat treatment without using a solvent, where the product consists of LiCl and a compound of magnesium, boron and hydrogen. Hydrogen desorption temperature of the product is approximately 100 K lower than that of LiBH4 and the decomposition consists of a two-step reaction. The products of the 1st and 2nd decomposition reactions are MgH2 and Mg, respectively. This result indicates the following two-step reaction (1st reaction: Mg(BH4)2→MgH2+2B+3H2, 2nd reaction: MgH2→Mg+H2). The first decomposition peak is dominant and is around 563 K. The 2nd decomposition occurs at the temperature greater than 590 K.

AB - Magnesium borohydride (Mg(BH4)2) is a promising material for hydrogen storage because of its high gravimetric storage density (15.0 mass%). We intended to synthesize Mg(BH4)2 by decomposition reaction of LiBH4 with MgCl2 by heat treatment without using a solvent, where the product consists of LiCl and a compound of magnesium, boron and hydrogen. Hydrogen desorption temperature of the product is approximately 100 K lower than that of LiBH4 and the decomposition consists of a two-step reaction. The products of the 1st and 2nd decomposition reactions are MgH2 and Mg, respectively. This result indicates the following two-step reaction (1st reaction: Mg(BH4)2→MgH2+2B+3H2, 2nd reaction: MgH2→Mg+H2). The first decomposition peak is dominant and is around 563 K. The 2nd decomposition occurs at the temperature greater than 590 K.

KW - Hydrogen absorbing materials

KW - Thermal analysis

KW - Thermodynamic properties

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Magnesium borohydride: A new hydrogen storage material

Abstract

Keywords

ASJC Scopus subject areas

UN SDGs

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