Synthesis and dehydriding studies of mg-n-h systems

Y. Nakamori, G. Kitahara, S. Orimo

Research output: Contribution to journalArticlepeer-review

113 Citations (Scopus)


Light-elemental amides and imides are recently regarded as potential candidates for high-performance hydrogen storage materials. In this studies, the single phases magnesium amide (Mg(NH2)2) and magnesium imide (MgNH) were successfully prepared by solid-gas reactions of MgH 2 with ammonia at 613 K and 653 K, respectively. Subsequently, Mg(NH2)2 was mixed with different molars of MgH 2 or LiH in order to systematically investigate the dehydriding properties. With increasing temperature, the mixtures of Mg(NH2) 2 and MgH2 desorb ammonia at approximately 630 K, similar to the decomposition reaction of Mg(NH2)2 alone. On the other hand, the mixture of Mg(NH2)2 and 4 M of LiH desorbs only hydrogen during heating because of the "ultra-fast" reaction of LiH with ammonia from Mg(NH2)2, unlike MgH2.

Original languageEnglish
Pages (from-to)309-312
Number of pages4
JournalJournal of Power Sources
Issue number1-2
Publication statusPublished - 2004 Nov 15


  • Amide
  • Hydrogen storage
  • Imide
  • Lithium
  • Magnesium
  • Solid-gas reaction

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Physical and Theoretical Chemistry
  • Electrical and Electronic Engineering


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