Synthesis of LiNH2 films by vacuum evaporation

Yuko Nakamori, Tetsuto Yamagishi, Masaki Yokoyama, Shin ichi Orimo

Research output: Contribution to journalLetter

21 Citations (Scopus)

Abstract

LiNH2, a new candidate of reversible hydrogen storage materials, was synthesized by vacuum evaporation of elemental Li with 99.9%-purity onto a metallic substrate, and subsequent nitrogenation and hydrogenation using high-purity gases. Depending on the evaporation time, the sample morphologies change from an island-shape with nearly 50μm (873K for 0min; just heated-up to the set temperature) to a homogeneously flat film (873K for 30min) with a thickness of nearly 500μm. The preliminary thermal desorption measurement implies a lower temperature hydrogen desorption from the film than that from bulk (powder) sample.

Original languageEnglish
Pages (from-to)L1-L3
JournalJournal of Alloys and Compounds
Volume377
Issue number1-2
DOIs
Publication statusPublished - 2004 Sep 8

Keywords

  • Gas-solid reactions
  • Hydrogen storage materials
  • Metal hydrides
  • Thermal analysis
  • Thin film
  • X-ray diffraction

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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