HYDROGEN STORAGE ALLOY, AND ELECTRODE FOR NICKEL-HYDROGEN BATTERY

文件类型：PDF文档
文件大小：760K
Disclosed is a hydrogen storage alloy which can be used as a material for a negative electrode of a nickel-hydrogen battery to be used in a hybrid vehicle, specifically as a power source of a traction motor for a vehicle body. The alloy is an AB5-type hydrogen storage alloy having a CaCu5-type crystalline structure and is represented by the general formula : RNiaCobAlcMnd (R : a mixture of rare earth metals), wherein a, b, c and d satisfy the requirements represented by the following formulae : 4.15≤a≤4.4, 0.15≤b≤0.35, 1≤c/d≤1.7 and 5.25≤a+b+c+d≤5.45.