Issue 31, 2014

Understanding composition–property relationships in Ti–Cr–V–Mo alloys for optimisation of hydrogen storage in pressurised tanks

Abstract

The location of hydrogen within Ti–Cr–V–Mo alloys has been investigated during hydrogen absorption and desorption using in situ neutron powder diffraction and inelastic neutron scattering. Neutron powder diffraction identifies a low hydrogen equilibration pressure body-centred tetragonal phase that undergoes a martensitic phase transition to a face-centred cubic phase at high hydrogen equilibration pressures. The average location of the hydrogen in each phase has been identified from the neutron powder diffraction data although inelastic neutron scattering combined with density functional theory calculations show that the local structure is more complex than it appears from the average structure. Furthermore the origin of the change in dissociation pressure and hydrogen trapping on cycling in Ti–Cr–V–Mo alloys is discussed.

Graphical abstract: Understanding composition–property relationships in Ti–Cr–V–Mo alloys for optimisation of hydrogen storage in pressurised tanks

Supplementary files

Article information

Article type
Paper
Submitted
17 Apr 2014
Accepted
24 Jun 2014
First published
24 Jun 2014
This article is Open Access
Creative Commons BY license

Phys. Chem. Chem. Phys., 2014,16, 16563-16572

Author version available

Understanding composition–property relationships in Ti–Cr–V–Mo alloys for optimisation of hydrogen storage in pressurised tanks

S. K. Callear, A. J. Ramirez-Cuesta, K. Kamazawa, S. Towata, T. Noritake, S. F. Parker, M. O. Jones, J. Sugiyama, M. Ishikiriyama and W. I. F. David, Phys. Chem. Chem. Phys., 2014, 16, 16563 DOI: 10.1039/C4CP01666A

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