| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1610806 | Journal of Alloys and Compounds | 2014 | 5 Pages |
Abstract
The structural characteristics and hydrogen-storage properties of the Ce2Ni7-type compound Sm2Co7 have been investigated for the first time. This alloy transforms to the β phase and then the γ phase upon hydrogenation. These two phases have been identified as Sm2Co7H2.9 and Sm2Co7H6.4, and their dehydrogenation enthalpies have been measured as 48.5 and 42.0 kJ/mol H2, respectively. Sm2Co7 shows excellent stability without obvious capacity loss after 50 cycles, and its hydrogenation process follows a three-dimensional-interface-controlled reaction at ambient temperature.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Z.J. Cao, L.Z. Ouyang, H. Wang, J.W. Liu, D.L. Sun, Q.A. Zhang, M. Zhu,