Experimental investigation of the swelling/shrinkage of a hydride bed in a cell during hydrogen absorption/desorption cycles

Benoit Charlas, Olivier Gillia, Pierre Doremus, Didier Imbault

Research output: Contribution to journalJournal articleResearchpeer-review

Abstract

The storage of hydrogen in hydride materials is currently much researched as a mean of energy storage. This reversible storage is achieved by successive hydriding and dehydriding reactions. During these reactions, the material undergoes structural transformations which result in swelling of the hydride powder grains due to the absorption of hydrogen. This phenomenon can generate major mechanical stresses on the cell containing the hydride. The present experimental study examines the cyclic swelling of a granular bed consisting of hydride Ti-Cr-V + Zr-Ni. Two superimposed phenomena are identified: a cyclic rearrangement causing a reduction and then an increase in porosity coupled with gradual densification of the stack. Copyright (C) 2012, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
Original languageEnglish
JournalInternational Journal of Hydrogen Energy
Volume37
Issue number21
Pages (from-to)16031-16041
Number of pages11
ISSN0360-3199
DOIs
Publication statusPublished - 2012
Externally publishedYes

Keywords

  • CHEMISTRY,
  • ELECTROCHEMISTRY
  • ENERGY
  • METAL HYDRIDE
  • STORAGE PROPERTIES
  • GRANULAR-MATERIALS
  • ALLOYS
  • SEGREGATION
  • ABSORPTION
  • EXPANSION
  • VESSEL
  • Hydrogen storage
  • Hydride
  • Swelling
  • Rearrangement
  • Granular
  • Hydrogen
  • Stresses
  • Zirconium
  • Hydrides
  • Cyclic swelling
  • Dehydriding
  • Experimental investigations
  • Experimental studies
  • Granular beds
  • Hydride bed
  • Hydriding
  • Hydrogen absorption
  • Mechanical stress
  • Powder grains
  • Reversible storage
  • Storage of hydrogen
  • Structural transformation
  • Swelling/shrinkage
  • HYDROGEN
  • Absorption & adsorption

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