| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lightweight and inexpensive hydrogen storage material easy to activate. <P>SOLUTION: The hydrogen storage material is expressed by a composition formula, (Ca<SB>1-x</SB>A<SB>x</SB>)<SB>1-z</SB>(Si<SB>1-y</SB><SB>y</SB>)<SB>z</SB>äA is at least one member selected from the group consisting of alkali metal elements, alkaline-earth metal elements, rare-earth elements, the elements of group 3 through 6, Ni, Au, In, Tl, Sn, Fe, Co, Cu and Ag; B is at least one member selected from the group consisting of the elements of groups 7 through 17 elements, rare-earth elements, Hf and Be; 0≤x<1 by atomic ratio; 0≤y<1 by atomic ratio; and 0.38≤z≤0.58 by atomic ratio}. It is lightweight as well as less expensive. In principle, neither high-temperature nor high-pressure activation is required, because it exhibits a high initial activity. The operation temperature can be lowered and the hydrogen absorption content can be increased by controlling the kind and substitution proportion of the substituent elements appropriately. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
