wavelength after the decomposition has already finished the first invention improves the cell characteristics by decreasing v while keeping the alloy ratio within the range of the body centered cubic structure in the ti cr v system phase diagram and adds ni so as to achieve a high capacity and a catalytic operation the addition amount of ni for remarkably exhibiting this effect is from 5 to 15 and preferably from 10 to 15 further at least one member selected from the group consisting of y lanthanoids pd and pt is added preferably in a amount of 2 to 10 so as to improve the charge and discharge characteristics particularly the cycle characteristics of the negative electrode at the time of discharge at a high efficiency from the aspect of the improvement in durability these elements form stable oxides and contribute to the improvement of durability at the same time because these elements have the catalytic operation for dissociating the hydrogen molecules into the atoms they can enhance the reaction rate with hydrogen when they are used as the addition elements of the hydrogen absorbing alloy of the present invention incidentally if the addition amounts of these elements are outside the range stipulated in the scope of claim the body centered cubic structure cannot be obtained so that the hydrogen absorption quantity decreases and the cell capacity deteriorates the second invention further reduces the v content basically keeps other.