Electrochemical and thermal properties of hydrogen-absorbed Mg67Ni28Pd5 amorphous alloy

Shin Ichi Yamaura, Keita Isogai, Hisamichi Kimura, Akihisa Inoue

    Research output: Contribution to journalArticlepeer-review

    14 Citations (Scopus)

    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. The hydrogen-absorbed amorphous alloy crystallizes through two stages of primary crystallization 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 the Mg-based amorphous alloy against crystallization increases by hydrogen absorption.

    Original languageEnglish
    Pages (from-to)60-64
    Number of pages5
    JournalJournal of Materials Research
    Volume17
    Issue number1
    DOIs
    Publication statusPublished - 2002 Jan

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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