Journal
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
Volume 38, Issue 16, Pages 6726-6729Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ijhydene.2013.03.120
Keywords
TiFe; BCC structure; Order-disorder phase transition; Hydrogen storage alloy; High pressure
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Funding
- Japan Society for the Promotion of Science (JSPS) [24760586]
- Grants-in-Aid for Scientific Research [24760586] Funding Source: KAKEN
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We investigated the hydrogenation of a binary TiFe alloy at 5 GPa and 600 degrees C by in situ synchrotron radiation X-ray diffraction measurements. After formation of a solid solution of hydrogen in TiFe, an order disorder phase transition in the metal lattice of TiFe occurred, which yielded a BCC TiFe hydride. The unit cell volume of the BCC hydride increased by 21.0% after the hydrogenation reaction. The volume expansion was larger than that of a gamma-hydride TiFeH1.9 prepared by hydrogenation near ambient conditions. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
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