Investigation of TiCr Hydrogen Storage Alloy


  • R. Pedicini CNR–ITAE, Institute for Advanced Energy Technologies, Via S. Lucia sopra Contesse 5, 98126 – Messina, Italy; Affiliated to Dipartimento di Fisica, Università della Calabria, Via Ponte P. Bucci, Cubo 31C, 87036 Arcavacata di Rende (CS)
  • I. Gatto CNR–ITAE, Institute for Advanced Energy Technologies, Via S. Lucia sopra Contesse 5, 98126 – Messina
  • E. Passalacqua CNR–ITAE, Institute for Advanced Energy Technologies, Via S. Lucia sopra Contesse 5, 98126 – Messina
  • C.A. Biffi CNR-ICMATE, Institute of Condensed Matter Chemistry and Technologies for Energy, Unit of Lecco, Via G.Previati 1/E, 23900 Lecco
  • M. Coduri CNR-ICMATE, Institute of Condensed Matter Chemistry and Technologies for Energy, Unit of Lecco, Via G.Previati 1/E, 23900 Lecco
  • A. Tuissi CNR-ICMATE, Institute of Condensed Matter Chemistry and Technologies for Energy, Unit of Lecco, Via G.Previati 1/E, 23900 Lecco



TiCr alloy development, morphological and crystallographic study, H2 sorption/desorption measurements, post mortem H2 sorption test characterisation.


A new reversible hydrogen storage material, based on TiCr metal alloy, is proposed. Cr and Ti were mixed and melted in a final atomic ratio of 1,78. Chemical-physical characterisations, in terms of XRD and SEM-EDX, were performed. The quantification of Laves phases was performed through Rietveld refinements. The atomic Cr/Ti ratio was determined by EDX analysis and 1,71 was obtained. The H2 sorption/desorption measurements by Sievert apparatus were carried out. After different tests varying temperature and pressure, a protocol measurement was established; and a H2 sorption value of 0,4 wt% at 200 °C/10 bar with a fast kinetic at 5 bar (Dwt% of about 0,3 wt%) were obtained. Hydrogen desorption measurements performed in the same conditions of T confirmed a totally reversible trend. A confirm of metal hydride formation was recorded by XRD, in fact, comparing X-Ray patterns before and after volumetric tests a notable difference was recorded.


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