Saft

Societe Anonyme Dite: Saft

Annick Percheron-Guegan

Jacques Bouet

Bernard Knosp

Christian Jordy

Jean-Michel Cocciantelli

Olivier Canet

The material is derived from the compound TiNi, is a single-phase material and is expressed by the following general formula:

Hydridable material for the negative electrode of a nickel-hydride

The present invention provides a hydridable material for the negative electrode of a nickel-hydride storage cell mainly comprising a Laves phase of the C14 hexagonal type (MgZn.sub.2), characterized by the general formula: ##EQU1## where A represents at least one element from Ti, Y, Ce, Ca, and Mg, and where M is chosen from Cr, V, and Si.

A hydridable alloy material represented by the formula AB.sub.5 for the negative electrode of a nickel-hydride storage cell. A represents La.sub.(1-x-y-z) Ce.sub.x Nd.sub.y Pr.sub.z, where 0.ltoreq.x.ltoreq.0.784, 0.ltoreq.z.ltoreq.1, 0.1.ltoreq.x+z, 0&lt;y+z, x+y+z.ltoreq.1, and 0.ltoreq.y.ltoreq.0.205-1.17x+2.39x.sup.2 -1.57x.sup.3 -z(0.23-0.65x+1.18x.sup.2)+z.sup.2 (0.18-0.54x), and B represents Ni partially substituted by Mn, Al and Co.

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Paris, France

Annick Percheron-Guegan