Pressure DSC studies on the formation and reproducibility of double peaks in the sorption of LaNi5-H2 during thermal cycling

M. T. Hagström*, P. D. Lund

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

Pressure Differential Scanning Calorimetry (PDSC) has been used to study the conditions of formation and disappearance of double peaks in the absorption and desorption of the LaNi5-H2 system during thermal cycling. Thermal absorption-desorption cycling reveals double-peak formation both in absorption and desorption phases. Splitting of a single peak into a double-one is induced below 60°C even in case of absorption. The double peak disappears, due to annealing at moderate temperatures in a hydrogen atmosphere, easier in absorption than in desorption. It reappears, however, easily when thermal cycling is continued.

Original languageEnglish
Pages (from-to)141-147
Number of pages7
JournalThermochimica Acta
Volume298
Issue number1-2
DOIs
Publication statusPublished - 1 Sep 1997
MoE publication typeA1 Journal article-refereed

Keywords

  • Annealing
  • Metal hydride
  • Pressure DSC
  • Stability
  • Thermal cycling

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