Patent ID: 6338764
Filing Date: 2002-01-15
Classification: C22C,H01M,Y02E,Y10S

Abstract:
A hydrogen-absorbing alloy comprises a composition expressed by the general formula:Ti(100âˆ’aâˆ’bâˆ’câˆ’d) CraVbNicXd, where X is at least one member selected from the group consisting of Y (yttrium), lanthanoids, Pd and Pt, each of a, b, c and d is represented, in terms of atomic %, by the relations 8&lE;a&lE;50, 30and a crystal structure of a principal phase which is a body-centered cubic structure, wherein the principal phase exists within the range where a body-centered cubic structure is generated by a spinodal decomposition, exclusive of C14 single-phase region, where C14 is a crystal structure of a Laves phase and MgZn2 hexagonal crystal structure; and said principal phase has a regular periodical structure and its empirical lattice constant is from 0.2950 nm to 0.3150 nm.