Dehydrogenation behavior of LiBH4/CaH2 composite with NbF5

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

doi:10.1016/j.scriptamat.2008.08.037

Dehydrogenation behavior of LiBH₄/CaH₂ composite with NbF₅

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

Department of Materials Science and Engineering

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

36 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 language	English
Pages (from-to)	1251-1254
Number of pages	4
Journal	Scripta Materialia
Volume	59
Issue number	12
DOIs	https://doi.org/10.1016/j.scriptamat.2008.08.037
Publication status	Published - 2008 Dec

Bibliographical note

Funding Information:
This study was sponsored by the KIST Core-Competence Program.

Keywords

Differential scanning calorimetry
Hydrides
Hydrogen storage
Mechanical milling
Thermodynamics

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

Access to Document

10.1016/j.scriptamat.2008.08.037

Cite this

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title = "Dehydrogenation behavior of LiBH4/CaH2 composite with NbF5",

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",

keywords = "Differential scanning calorimetry, Hydrides, Hydrogen storage, Mechanical milling, Thermodynamics",

author = "Lim, {Jae Hag} and Shim, {Jae Hyeok} and Lee, {Young Su} and Cho, {Young Whan} and Joonho Lee",

note = "Funding Information: This study was sponsored by the KIST Core-Competence Program. ",

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AU - Lim, Jae Hag

AU - Shim, Jae Hyeok

AU - Lee, Young Su

AU - Cho, Young Whan

AU - Lee, Joonho

N1 - Funding Information: This study was sponsored by the KIST Core-Competence Program.

PY - 2008/12

Y1 - 2008/12

N2 - 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

AB - 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

KW - Differential scanning calorimetry

KW - Hydrides

KW - Hydrogen storage

KW - Mechanical milling

KW - Thermodynamics

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