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HomeMaterials Science ForumMaterials Science Forum Vol. 941Hydrogen Release from Oxidized Titanium Hydride

Hydrogen Release from Oxidized Titanium Hydride

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Abstract:

Hydrogen storage is one of the most important industrial applications of titanium hydride (TiH₂). A critical issue is the hydrogen release rate that strongly depends on the surface structure of TiH₂ particles. This work reports the results of an experimental campaign carried out on TiH₂ powders submitted to heat treatments in air at different temperatures and treatment times. After each heat treatment the TiH₂ powders were examined by X-ray diffraction (XRD) and the results evidenced that the surface layer consists of TiO₂ and Ti₂O. Titanium oxide formation has been monitored by XRD at high temperature. Hydrogen release during heating of oxidized powders was investigated through temperature programmed desorption (TPD). Residual hydrogen in TiH₂ depends on the specific treatment: higher temperature and soaking time of the treatment, lower its content.

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THERMEC 2018

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Periodical:

Materials Science Forum (Volume 941)

Pages:

2203-2208

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.941.2203

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Online since:

December 2018

Authors:

Marco Gambini, Roberto Montanari, Maria Richetta, Tommaso Stilo*, Alessandra Varone, Michela Vellini

Keywords:

Hydrogen Release, Oxidation Heat Treatments, Titanium Hydride, X-Ray Diffraction

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© 2018 Trans Tech Publications Ltd. All Rights Reserved

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