Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1294826 | Journal of Power Sources | 2008 | 4 Pages |
Abstract
A 50–50 mixture of Mg and Ti was milled for different times, and the cycling discharge capacities of the resulting compounds were evaluated in KOH media. From Rietveld refinement analysis of the X-ray diffraction patterns, it is shown that a metastable hcp Mg50Ti50 compound is formed after 20 h of milling. This material has a very low-electrochemical hydriding activity. However, in the presence of 10 wt.% Pd (added before milling), it displays a maximum discharge capacity of ca. 400 mAh g−1 after three charge/discharge cycles. The irreversible structural evolution of the Mg50Ti50 alloy from a hcp phase to a fcc phase upon cycling is demonstrated.
Related Topics
Physical Sciences and Engineering
Chemistry
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Authors
S. Rousselot, M.-P. Bichat, D. Guay, L. Roué,