期刊
JOURNAL OF SOLID STATE CHEMISTRY
卷 182, 期 11, 页码 3113-3117出版社
ACADEMIC PRESS INC ELSEVIER SCIENCE
DOI: 10.1016/j.jssc.2009.08.027
关键词
Scandium intermetallics; Hydrides; Hydrogen storage materials; X-ray diffraction
资金
- Swedish Research Council
- Nordic Energy Programme
- Royal Swedish Academy of Sciences
- Helge Ax:son Johnsons stiftelse
- Hungarian Scientific Research Fund [T048827, K-68312]
- Research Centre Rez [AV0Z10480505, MSM2672244501]
- Carl Tryggers Foundation
A novel aluminium rich alloy for hydrogen storage has been discovered, ScAl0.8Mg0.2, which has very promising properties regarding hydrogen storage capacity, kinetics and stability towards air oxidation in comparison to hydrogen absorption in state-of-the-art intermetallic compounds. The absorption of hydrogen was found to be very fast, even without adding any catalyst, and reversible. The discovered alloy crystallizes in a CsCl-type structure, but decomposes to ScH2 and Al(Mg) during hydrogen absorption. Detailed analysis of the hydrogen absorption in ScAl0.8Mg0.2 has been performed using in situ synchrotron radiation powder X-ray diffraction, neutron powder diffraction and quantum mechanical calculations. The results from theory and experiments are in good agreement with each other. (C) 2009 Elsevier Inc. All rights reserved.
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