Cyclic hydrogenation and dehydrogenation property of LiNH2 impregnated into Ni foam

Masaharu Menjo, Ioshihiro Hyodo, Satoko Moriyama, Hai Wen Li, Motoaki Matsuo, Satoshi Semboshi, Shin Ichi Orimo

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

Cyclic hydrogenation and dehydrogenation property of LiNH2 impregnated into the Ni foam was experimentally investigated, comparing with that of conventional LiNH2 powder. The amount of dehydrogenation from the impregnated sample after activating was 4.3 mass% (without the weight of the Ni foam), and remained 3.3 mass% after the 49th cycle of hydrogenation and dehydrogenation, while the amount from the powder sample drastically decreased down to 0.5mass% until only the 11th cycle. The main origin of the superior cyclic property of the impregnated sample was attributed to the suppression of sintering, mainly due to release of the exothermic heat during the hydrogenation supported by the frames of the Ni foam.

Original languageEnglish
Pages (from-to)623-626
Number of pages4
JournalMaterials Transactions
Volume52
Issue number4
DOIs
Publication statusPublished - 2011 Apr 1

Keywords

  • Hydrogen storage material
  • Impregnation
  • Lithium amide
  • Lithium imide

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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