| 摘要 |
PURPOSE: To provide a hydridable material of AB5 type for a negative electrode of a nickel-hydride storage battery. CONSTITUTION: A hydridable material of AB5 type for a negative electrode of a nickel - hydride storage battery is derived from a compound MmNi5 (Mn is misch metal, and Ni is partially substituted with Mn, Al, and Co), term A has a general formula, La(1-x-y-z) Cex Ndy Prr wherein 0<=x<=0.784, 0.15<=z<=1, 0.1<=x+z, 0<y+z, x+y+z<=1 and 0<=y<=0.205-1.17x+2.39x<2> -1.57x<3> -z(0.23-0.65x+1.18x<2> )+z<2> (0.18-0.54x)}, and term B5 has a general formula, Nia Mnb Alc Cod (wherein 3.25<=a<=3.75, 0.25<=b<=0.45, 0.25<=c<=0.45, 0.65<=d<=0.95, and 4.8<=a+b+c+d<=5.2). |
