| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1622108 | Journal of Alloys and Compounds | 2009 | 5 Pages |
Abstract
The hydrogen storage properties, phase components and surface characteristics of a newly designed MgH2-(Sr,Ca)2AlH7 composite doped with a little amount of TiF3 were studied in this paper. It was found that the MgH2-30Â wt.% (Sr,Ca)2AlH7 composite doped with 2Â mol% of TiF3 desorbed hydrogen quickly at 573Â K. Moreover, it has a higher re-hydrogenation rate at the temperatures below 473Â K under the hydrogen pressure of 1.0Â MPa. The new Ti-contained species as well as the phases (Sr,Ca)F2, (Sr,Ca)H2 and (Sr,Ca)Al4 formed during the dehydrogenation process prior to the hydrogen uptake distributes homogeneously on the surface of Mg particles, and has a good catalytic effect on the re-hydrogenation process of Mg phase consequently.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
D.M. Liu, C.H. Fang, Q.A. Zhang,