Lithium nitride for reversible hydrogen storage

Takayuki Ichikawa, Shigehito Isobe, Nobuko Hanada, Hironobu Fujii

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288 Citations (Scopus)

Abstract

In this paper, we examined the basic properties in the 1:1 mixture of lithium amide LiNH2 and lithium hydride LiH as a candidate of reversible hydrogen storage materials. The thermal desorption mass spectra of the ball milled mixture without any catalysts indicated that hydrogen H 2 is released in the temperature range from 180 to 400°C while emitting a considerable amount of ammonia NH3. On the other hand, the ball milled mixture containing a small amount of TiCl3 as a catalyst showed the most superior hydrogen storage properties among the 1:1 mixtures with a small amount of catalysts, Ni, Fe, Co metals and TiCl 3 (1 mol.%). That is, the product desorbs a large amount of hydrogen (∼5.5 wt.%) in the temperature from 150 to 250°C under the condition of a heating rate of 5°C/min, but it does not desorb ammonia at all within our experimental accuracy. In addition, we confirmed that the product shows an excellent cycle retention with an effective hydrogen capacity of more than 5 wt.% and a high reaction rate until at least 3 cycles.

Original languageEnglish
Pages (from-to)271-276
Number of pages6
JournalJournal of Alloys and Compounds
Volume365
Issue number1-2
DOIs
Publication statusPublished - 2004 Feb 25
Externally publishedYes

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Keywords

  • Gas-solid reaction
  • Hydrogen absorbing materials
  • Mechanochemical processing
  • Metal hydrides

ASJC Scopus subject areas

  • Metals and Alloys

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