Reversible hydrogen-storage functions for mixtures of Li3N and Mg3N2

Y. Nakamori; G. Kitahara; K. Miwa; S. Towata; S. Orimo

doi:10.1007/s00339-004-3002-6

Reversible hydrogen-storage functions for mixtures of Li₃N and Mg₃N₂

Y. Nakamori, G. Kitahara, K. Miwa, S. Towata, S. Orimo

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102 Citations (Scopus)

Abstract

The hydriding and dehydriding reactions occurring in mixtures of lithium and magnesium nitrides (Li₃N and Mg₃N₂) were investigated for the first time in fixed composition ratios. A mixture of Li₃N-20 at. % Mg₃N₂ after heat treatment at 833 K was hydrogenated at 523 K in 35 MPa according to the following overall reaction: 4Li₃N + Mg₃N₂ + 12H₂ ⇔ 12LiH + 3Mg(NH₂)₂. This reaction is one of the candidates for reversible hydrogen-storage functions in which 9.1 mass % of hydrogen can be stored in the solid state.

Original language	English
Pages (from-to)	1-3
Number of pages	3
Journal	Applied Physics A: Materials Science and Processing
Volume	80
Issue number	1
DOIs	https://doi.org/10.1007/s00339-004-3002-6
Publication status	Published - 2005 Jan

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abstract = "The hydriding and dehydriding reactions occurring in mixtures of lithium and magnesium nitrides (Li3N and Mg3N2) were investigated for the first time in fixed composition ratios. A mixture of Li3N-20 at. % Mg3N2 after heat treatment at 833 K was hydrogenated at 523 K in 35 MPa according to the following overall reaction: 4Li3N + Mg3N2 + 12H2 ⇔ 12LiH + 3Mg(NH2)2. This reaction is one of the candidates for reversible hydrogen-storage functions in which 9.1 mass % of hydrogen can be stored in the solid state.",

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AB - The hydriding and dehydriding reactions occurring in mixtures of lithium and magnesium nitrides (Li3N and Mg3N2) were investigated for the first time in fixed composition ratios. A mixture of Li3N-20 at. % Mg3N2 after heat treatment at 833 K was hydrogenated at 523 K in 35 MPa according to the following overall reaction: 4Li3N + Mg3N2 + 12H2 ⇔ 12LiH + 3Mg(NH2)2. This reaction is one of the candidates for reversible hydrogen-storage functions in which 9.1 mass % of hydrogen can be stored in the solid state.

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Reversible hydrogen-storage functions for mixtures of Li₃N and Mg₃N₂

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