| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a high-capacity hydrogen storage alloy having a BCC structure in its as-refined state and excellent hydrogen desorption properties in a low temperature region. <P>SOLUTION: This hydrogen storage alloy has a composition represented by general formula Ti<SB>a</SB>Mo<SB>b</SB>V<SB>c</SB>(wherein, the symbols (a), (b) and (c) shows respective atomic percentages of the elements; and a+b+c=100, 0<b<25 and c≥70 are satisfied) or general formula Ti<SB>a</SB>Mo<SB>b</SB>V<SB>c</SB>(wherein, the symbols (a), (b) and (c) show atomic percentages of the elements; and a+b+c=100, 0<b<25, c<70 and a/b≤2 are satisfied) and also has a body centered cubic structure. The alloy can effectively absorb and desorb hydrogen at ordinary temperature and further has excellent desorption properties in a low temperature region, e.g., at a temperature below the freezing point. Moreover, because it shows a BCC structure in all compositional ranges even in an as-refined state, need for after-treatment such as special heat treatment can be obviated and manufacturing burden can be reduced. <P>COPYRIGHT: (C)2009,JPO&INPIT |
