| 摘要 |
PROBLEM TO BE SOLVED: To produce a hydrogen storage alloy lighter and more expensive than the conventional MmNi5 type hydrogen storage alloy, in which effective hydrogen storage volume V in the ranges of ordinary temperature (about 20 deg.C) to 100 deg.C× atmospheric pressure (0.1 MPa) to 1.0 MPa is higher than 1.3 mass % which is the value of the conventional material and useful for a hydrogen storing vessel feeding the fuel of a hydrogen fuel battery, a heat pump, a heat accumulator, or the like. SOLUTION: This hydrogen storage alloy has a composition represented by CaAMgBNiCMD; where in, M is at least one king of element selected from Al, Si, P, Cr, Mn, Fe, Co, Cu and Zn, and 3.0<=(C+D)/(A+B) <=3.2, 0.4<=B/(A+B)<=0.6, and 0<=D/(C+D)<=0.2 are satisfied. |
