Hydridable alloy
AssigneeAlcatel
InventorsBernard Knosp, Olivier Arnaud, Thierry Hezeque, Paul Barbic, Alexander Bouvier
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Abstract
An electrochemically active material consisting of a CaCu5 structure single-phase hydridable alloy with the formula MmNiaMnbAlcCodCre in which Mm is a mischmetal containing at least 50 wt % La, where: 5.10≦(a+b+c+d+e), d≦0.55, and 0.03≦e≦0.1.
Claims13
An electrochemically active material consisting of a CaCu5 structure single-phase hydridable alloy with the formula
- MmNiaMnbAlcCodCre
- in which Mm is a mischmetal containing at least 50 wt % La, where:
- 5.10≦(a+b+c+d+e),
- d≦0.55,
- 0.03≦e≦0.1.
A method of fabricating an electrochemically active material consisting of a CaCu5 structure single-phase hydridable alloy with the formula
- MmNiaMnbAlcCodCre
- in which Mm is a mischmetal containing at least 50 wt % La, where:
- 5.10≦(a+b+c+d+e),
- d≦0.55,
- 0.03≦e≦0.1,
- said method including the following steps:
- simultaneously melting the constituents of the hydridable alloy in an oxygen-free atmosphere,
- rapidly cooling the molten mixture at a cooling rate of at least 10° C.s−1;
- and
- annealing the alloy in an oxygen-free atmosphere at temperatures from 900° C. to 1100° C.
An electrode including an electrochemically active material consisting of a CaCu5 structure single-phase hydridable alloy with the formula
- MmNiaMnbAlcCodCre
- in which Mm is a mischmetal containing at least 50 wt % La, where:
- 5.10≦(a+b+c+d+e),
- d≦0.55,
- 0.03≦e≦0.1,
- said electrode further including a conductive support and a layer containing said active material and a binder.
Dependencies are inferred from the claim text.