Hydrogen storage properties of the pseudo binary laves phase (Sc1-xZrx)(Co1-yNiy)2 system

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  • Jonas Ångström, Uppsala University, Sverige
  • Robert Johansson, Uppsala University, Sverige
  • Line Holdt Rude, Danmark
  • Carsten Gundlach, Max IV Laboratory, Lund, Sverige
  • Ralph H. Scheicher, Uppsala University, Sverige
  • Rajeev Ahuja, Uppsala University, Sverige
  • Olle Eriksson, Uppsala University, Sverige
  • Torben R. Jensen
  • M. Sahlberg, Uppsala University, Sverige
The (ScZr)(CoNi) -H system has been studied using both experimental techniques and ab initio calculations. The material was synthesised through high temperature synthesis and characterised using powder XRD. Hydrogen absorption and desorption was studied in-situ using synchrotron radiation. Maximal storage capacity increased when Co replaced Ni and substitution of Sc for Zr increased the equilibrium pressure. Density functional based calculations reproduce the experimental trends in terms of cell parameters both for the non-hydrogenated systems as well as for the hydrogenated systems, and helped to quantitatively understand the observed hydrogen uptake properties.
OriginalsprogEngelsk
TidsskriftInternational Journal of Hydrogen Energy
Vol/bind38
Nummer23
Sider (fra-til)9772-9778
Antal sider7
ISSN0360-3199
DOI
StatusUdgivet - 2013

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