Effects of hydriding-dehydriding cycling on P-C-T and electrochemical properties of La-Ca-Ni-Al alloys

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[1] Li, Z.P.
[2] Suda, S.
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Li, Z.P. | 1600年 / Elsevier Science S.A., Lausanne, Switzerland卷 / 231期
关键词：
Composition effects - Electrochemistry - Electrodes - Hydrides - Pressure effects - Substitution reactions - Thermal effects - X ray analysis;
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摘要：
In this study we investigated the hydriding-dehydriding cycling effect on electrochemical capacity, durability and P-C-T characteristics of Ca1-xLaxNi4.7Al0.3 alloys at 40 °C, x = 0, 0.2 and 0.6 La-substituted alloys showed a smaller electrochemical capacity degradation than CaNi5 after 40 hydriding-dehydriding cycles at 40 °C. It was found that hydriding-dehydriding cycling at 40 °C non-crystallized the Ca2Ni7 phase through X-ray analysis. Compared with uncycled alloys, La-substituted Ca-based alloys showed better durability except for La-free CaNi4.7Al0.3.
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