Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1276223 | International Journal of Hydrogen Energy | 2011 | 5 Pages |
Abstract
The cyclic stability and high rate discharge performance of (La,Mg)5Ni19 multiphase alloy were investigated in this work. The results show that the alloy is composed of Pr5Co19-type (2H), Ce5Co19-type (3R), CaCu5-type and Ce2Ni7-type phase after annealing at 1123 K. The total phase abundance of Pr5Co19-type (2H) and Ce5Co19-type (3R) is 63.3%. That composition decides the good cyclic stability both in repeated hydriding/dehydriding and charging/discharging process for this alloy. Moreover, the alloy shows the higher high rate discharge capacity at room temperature and it remains 140 mA h/g at the current density of 3600 mA/g.
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Authors
Z.Y. Liu, X.L. Yan, N. Wang, Y.J. Chai, D.L. Hou,