Effect of several metal chlorides on the thermal decomposition behaviour of α-Mg(BH4)2

Elisa Gil Bardají; Nobuko Hanada; Oleg Zabara; Maximilian Fichtner

doi:10.1016/j.ijhydene.2011.07.008

Effect of several metal chlorides on the thermal decomposition behaviour of α-Mg(BH₄)₂

Elisa Gil Bardají^*, Nobuko Hanada, Oleg Zabara, Maximilian Fichtner

^*Corresponding author for this work

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

60 Citations (Scopus)

Abstract

Mechanochemical alloying of Mg(BH₄)₂ with small amounts of metal chlorides (PdCl₂, TiCl₃, VCl₃, MoCl₃, RuCl₃, CeCl₃ and NbCl₅) results in the formation of transition metal doped nanocomposites with different hydrogen desorption properties. The thermal decomposition properties of ball-milled as well as doped α-Mg(BH₄)₂ have been studied. An amorphization reaction of Mg(BH₄)₂ is induced by ball milling, nevertheless a partial recrystallization of the alpha phase takes place after heating up to 150 °C. The effect of ball milling Mg(BH₄)₂ with each additive has been investigated in detail by using differential scanning calorimetry, thermogravimetric analysis and X-ray diffraction. The onset temperature of Mg(BH₄)₂ is lowered by more than 100 °C through the addition of Nb- or Ti chloride. Moreover, a mixed Ti-Nb-nanocomposite was also synthesized and investigated. The onset temperature of hydrogen evolution during decomposition of the mixed Ti-Nb-nanocomposite is considerably lowered by up to 125 °C.

Original language	English
Pages (from-to)	12313-12318
Number of pages	6
Journal	International Journal of Hydrogen Energy
Volume	36
Issue number	19
DOIs	https://doi.org/10.1016/j.ijhydene.2011.07.008
Publication status	Published - 2011 Sept
Externally published	Yes

Keywords

Additive
HP-DSC
Hydrogen storage
In-situ XRD
Magnesium borohydride
TG-MS

ASJC Scopus subject areas

Renewable Energy, Sustainability and the Environment
Fuel Technology
Condensed Matter Physics
Energy Engineering and Power Technology

UN SDGs

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

Access to Document

10.1016/j.ijhydene.2011.07.008

Cite this

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title = "Effect of several metal chlorides on the thermal decomposition behaviour of α-Mg(BH4)2",

abstract = "Mechanochemical alloying of Mg(BH4)2 with small amounts of metal chlorides (PdCl2, TiCl3, VCl3, MoCl3, RuCl3, CeCl3 and NbCl5) results in the formation of transition metal doped nanocomposites with different hydrogen desorption properties. The thermal decomposition properties of ball-milled as well as doped α-Mg(BH4)2 have been studied. An amorphization reaction of Mg(BH4)2 is induced by ball milling, nevertheless a partial recrystallization of the alpha phase takes place after heating up to 150 °C. The effect of ball milling Mg(BH4)2 with each additive has been investigated in detail by using differential scanning calorimetry, thermogravimetric analysis and X-ray diffraction. The onset temperature of Mg(BH4)2 is lowered by more than 100 °C through the addition of Nb- or Ti chloride. Moreover, a mixed Ti-Nb-nanocomposite was also synthesized and investigated. The onset temperature of hydrogen evolution during decomposition of the mixed Ti-Nb-nanocomposite is considerably lowered by up to 125 °C.",

keywords = "Additive, HP-DSC, Hydrogen storage, In-situ XRD, Magnesium borohydride, TG-MS",

author = "Bardaj{\'i}, {Elisa Gil} and Nobuko Hanada and Oleg Zabara and Maximilian Fichtner",

note = "Funding Information: The authors thank Ms. Eva R{\"o}hm, the Helmholtz initiative “FuncHy” and the EU project “NESSHy” (grant # 518271 ) for financial support. ",

year = "2011",

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doi = "10.1016/j.ijhydene.2011.07.008",

language = "English",

volume = "36",

pages = "12313--12318",

journal = "International Journal of Hydrogen Energy",

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T1 - Effect of several metal chlorides on the thermal decomposition behaviour of α-Mg(BH4)2

AU - Bardají, Elisa Gil

AU - Hanada, Nobuko

AU - Zabara, Oleg

AU - Fichtner, Maximilian

N1 - Funding Information: The authors thank Ms. Eva Röhm, the Helmholtz initiative “FuncHy” and the EU project “NESSHy” (grant # 518271 ) for financial support.

PY - 2011/9

Y1 - 2011/9

N2 - Mechanochemical alloying of Mg(BH4)2 with small amounts of metal chlorides (PdCl2, TiCl3, VCl3, MoCl3, RuCl3, CeCl3 and NbCl5) results in the formation of transition metal doped nanocomposites with different hydrogen desorption properties. The thermal decomposition properties of ball-milled as well as doped α-Mg(BH4)2 have been studied. An amorphization reaction of Mg(BH4)2 is induced by ball milling, nevertheless a partial recrystallization of the alpha phase takes place after heating up to 150 °C. The effect of ball milling Mg(BH4)2 with each additive has been investigated in detail by using differential scanning calorimetry, thermogravimetric analysis and X-ray diffraction. The onset temperature of Mg(BH4)2 is lowered by more than 100 °C through the addition of Nb- or Ti chloride. Moreover, a mixed Ti-Nb-nanocomposite was also synthesized and investigated. The onset temperature of hydrogen evolution during decomposition of the mixed Ti-Nb-nanocomposite is considerably lowered by up to 125 °C.

AB - Mechanochemical alloying of Mg(BH4)2 with small amounts of metal chlorides (PdCl2, TiCl3, VCl3, MoCl3, RuCl3, CeCl3 and NbCl5) results in the formation of transition metal doped nanocomposites with different hydrogen desorption properties. The thermal decomposition properties of ball-milled as well as doped α-Mg(BH4)2 have been studied. An amorphization reaction of Mg(BH4)2 is induced by ball milling, nevertheless a partial recrystallization of the alpha phase takes place after heating up to 150 °C. The effect of ball milling Mg(BH4)2 with each additive has been investigated in detail by using differential scanning calorimetry, thermogravimetric analysis and X-ray diffraction. The onset temperature of Mg(BH4)2 is lowered by more than 100 °C through the addition of Nb- or Ti chloride. Moreover, a mixed Ti-Nb-nanocomposite was also synthesized and investigated. The onset temperature of hydrogen evolution during decomposition of the mixed Ti-Nb-nanocomposite is considerably lowered by up to 125 °C.

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KW - Magnesium borohydride

KW - TG-MS

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