Ti-V-Mn based metal hydrides for hydrogen compression applications

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Ti-V-Mn based alloys, consisting mainly of the hexagonal C14 Laves and BCC phases, with nominal compositions of Ti0.5V0.4TM0.1Mn, where TM = Nb, Cr, Mo, Ta and Ti0.5V0.5-xNbxMn, where x = 0.05 and 0.2, were synthesised by arc melting. It was found that small amounts of Nb substituted for V (x = 0.05 and 0.1) resulted in smaller hysteresis between absorption and desorption as well as higher hydrogen dissociation pressures, compared to Ti0.5V0.5Mn. These findings show that Ti0.5-V0.45-Nb0.05-Mn is a suitable alloy to be used in a metal hydride compressor to deliver a pressure of 650 bar in the temperature range 303-473 K.

Bibliographic note

Funding Information: The authors acknowledge support from the EPSRC SUPERGEN UK-SHEC (EP/E040071/1), EPSRC SCRATCH (EP/E034888/1) and AWM Birmingham Science City Hydrogen Energy projects. The authors are grateful to Mr Andrew Bradshaw for technical support. Publisher Copyright: © 2015 Elsevier B.V. All rights reserved. Copyright: Copyright 2015 Elsevier B.V., All rights reserved.


Original languageEnglish
Pages (from-to)S400-S403
Number of pages4
JournalJournal of Alloys and Compounds
Issue numberSupp 1
Early online date23 Dec 2014
Publication statusPublished - 5 Oct 2015
Event 14th International Symposium on Metal-Hydrogen Systems: Fundamentals and Applications, 2014 (MH2014) - Manchester, United Kingdom
Duration: 20 Jul 201425 Jul 2014


  • Hydrogen absorption-desorption, Hydrogen compression, Metal hydride hydrogen compressor, Ti-V-Mn based alloys, X-ray diffraction