Reversible hydrogen-storage functions for mixtures of Li3N and Mg3N2 |
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| Authors: | Y. Nakamori G. Kitahara K. Miwa S. Towata S. Orimo |
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| Affiliation: | (1) Institute for Materials Research, Tohoku University, Sendai 980-8577, Japan;(2) Toyota Central R&D Labs., Inc., Nagakute, Aichi 480-1192, Japan |
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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. PACS 81.05.Zx; 71.20.Ps; 82.30.-b |
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