Pressure-Composition-Temperature Properties of Hydriding Combustion-Synthesized Mg_2NiH_4

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Pure Mg<SUB>2</SUB>NiH<SUB>4</SUB> was first prepared by Hydriding Combustion Synthesis (HCS), under which pressure and temperature were sensitively controlled. The purpose of this paper was to study “Pressure-Composition-Temperature (PCT)” properties of the HCSed product, in which hydrogen storage capacity, hydriding reaction rate, and PCT curves were mainly examined, in comparison to the commercially available product, <I>i.e.</I>, Ingot Metallurgy product. The results showed that the HCSed Mg<SUB>2</SUB>NiH<SUB>4</SUB> has 3.6 mass%, same as theoretical value, in hydrogen storage capacity in the first cycle just after synthesized without activation treatment, and very large reaction rate; only five minutes for full charge. Plateau pressure of the HCSed Mg<SUB>2</SUB>NiH<SUB>4</SUB> in PCT curves also became relatively lower than the conventional one. One of the most interesting results is the high activity of our product: it stored hydrogen even at room temperature. These results appealed a possibility of new productive process of hydrogen storage alloy from the viewpoint of product property.

収録刊行物

  • Materials transactions

    Materials transactions 43(5), 1100-1104, 2002-05-01

    公益社団法人 日本金属学会

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各種コード

  • NII論文ID(NAID)
    10012323540
  • NII書誌ID(NCID)
    AA1151294X
  • 本文言語コード
    ENG
  • 資料種別
    ART
  • ISSN
    13459678
  • NDL 記事登録ID
    6180284
  • NDL 雑誌分類
    ZP41(科学技術--金属工学・鉱山工学)
  • NDL 請求記号
    Z53-J286
  • データ提供元
    CJP書誌  CJP引用  NDL  J-STAGE 
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