by A. M. Vredenberg, E. M. B. Heller and D. O. Boerma
Abstract:
The hydrogen storage properties of thin films of FeTi evaporated on Si substrates and covered with 20nm Pd were studied. The films serve as a model system for powdered FeTi, with grains that are (partly) covered with Pd. This material could serve as a practical hydrogen storage material. The 20nm Pd layer prevents the oxidation of the FeTi layer during air exposure up to temperatures of 200°C and during H charging and discharging in impure hydrogen. The FeTi is a mixture of amorphous and nano-crystalline material. Two FeTi compositions (43at.% Fe, i.e. Ti-rich, and 56at.% Fe, i.e. Fe-rich) were studied. The H charging and discharging characteristics as a function of temperature and pressure are determined from a differential pressure measurement for Fe and Ti-rich material before and after annealing. After discharging in vacuum at a temperature of 150°C a H residue of H/M∼0.12 is observed. The recoverable charging capacity of FeTi (also after many cycles) is 0.9ΔH/M (H atoms per metal atom) for RT charging at 2700mbar and vacuum discharging at 150°C.
Reference:
A. M. Vredenberg, E. M. B. Heller and D. O. Boerma, “Hydriding characteristics of FeTi/Pd films”, Journal of Alloys and Compounds, vol. 400, no. 1, pp. 188–193.
Bibtex Entry:
@article{vredenberg_hydriding_2005,
title = {Hydriding characteristics of {FeTi}/{Pd} films},
volume = {400},
issn = {0925-8388},
url = {http://www.sciencedirect.com/science/article/pii/S0925838805003580},
doi = {10.1016/j.jallcom.2005.03.081},
abstract = {The hydrogen storage properties of thin films of FeTi evaporated on Si substrates and covered with 20nm Pd were studied. The films serve as a model system for powdered FeTi, with grains that are (partly) covered with Pd. This material could serve as a practical hydrogen storage material. The 20nm Pd layer prevents the oxidation of the FeTi layer during air exposure up to temperatures of 200°C and during H charging and discharging in impure hydrogen. The FeTi is a mixture of amorphous and nano-crystalline material. Two FeTi compositions (43at.% Fe, i.e. Ti-rich, and 56at.% Fe, i.e. Fe-rich) were studied. The H charging and discharging characteristics as a function of temperature and pressure are determined from a differential pressure measurement for Fe and Ti-rich material before and after annealing. After discharging in vacuum at a temperature of 150°C a H residue of H/M∼0.12 is observed. The recoverable charging capacity of FeTi (also after many cycles) is 0.9ΔH/M (H atoms per metal atom) for RT charging at 2700mbar and vacuum discharging at 150°C.},
number = {1},
urldate = {2017-11-20},
journal = {Journal of Alloys and Compounds},
author = {Vredenberg, A. M. and Heller, E. M. B. and Boerma, D. O.},
month = sep,
year = {2005},
keywords = {Thin films, Disordered systems, Gas–solid reactions, Hydrogen storage materials, Intermetallics},
pages = {188--193},
file = {ScienceDirect Full Text PDF:E:\cmam_papers\files\1575\Vredenberg et al. - 2005 - Hydriding characteristics of FeTiPd films.pdf:application/pdf;ScienceDirect Full Text PDF:E:\Usuarios\Administrator\Zotero\storage\KI43JZHK\Vredenberg et al. - 2005 - Hydriding characteristics of FeTiPd films.pdf:application/pdf;ScienceDirect Snapshot:E:\cmam_papers\files\1574\S0925838805003580.html:text/html;ScienceDirect Snapshot:E:\Usuarios\Administrator\Zotero\storage\DBHSA5JU\S0925838805003580.html:text/html},
}