Abstract
We have examined electrochemical properties and thermal stability of the amorphous Mg67Ni28Pd5 alloy produced by melt-spinning subjected to electrochemical hydrogen charge. In the cyclic life test, the discharge capacity of the alloy increases significantly with increasing cycle number and reaches 411 mA h/g at the 15th cycle. Thehydrogen-absorbed amorphous alloy crystallizes through two stages of primarycrystallization of Mg2Ni, followed by precipitation of Mg2NiH4 at the second stage.The completed crystallization temperature of the hydrogen-absorbed alloy increases by 65 K as compared with the as-solidified one. It is thus concluded that stability of theMg-based amorphous alloy against crystallization increases by hydrogen absorption.
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Yamaura, SI., Isogai, K., Kimura, H. et al. Electrochemical and Thermal Properties of Hydrogen-absorbed Mg67Ni28Pd5 Amorphous Alloy. Journal of Materials Research 17, 60–64 (2002). https://doi.org/10.1557/JMR.2002.0011
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DOI: https://doi.org/10.1557/JMR.2002.0011