Structural, thermodynamic and electrochemical properties of over-stoichiometric La1-y(Ni1-zSnz) 5+2y hydride forming compounds

M. Latroche, A. Percheron-Guégan, P. H.L. Notten

Research output: Contribution to journalArticleAcademicpeer-review

6 Citations (Scopus)

Abstract

The structural properties of four tin substituted La1-y(Ni 1-zSnz)5+2y compounds have been investigated by X-ray powder diffraction (XRD) and microprobe analysis as a function of both tin amount (z) and over-stoichiometry (y). Their thermodynamic behaviour toward hydrogen gas absorption/desorption has been measured up to 1MPa. Their electrochemical capacities and cycle lives have been determined. From these analyses, the different behaviour observed for these materials have been correlated to their structural and thermodynamic properties.

Original languageEnglish
Pages (from-to)133-140
Number of pages8
JournalJournal of Alloys and Compounds
Volume377
Issue number1-2
DOIs
Publication statusPublished - 8 Sep 2004

Keywords

  • AB
  • Electrochemical reactions
  • Electrochemistry
  • Gas-solid reactions
  • Hydrides
  • Hydrogen absorbing materials
  • Intermetallic compounds
  • Metal hydrides
  • Sn
  • X-ray diffraction

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