Hydrogen-storage material employing ti-mn alloy system

Details Hydrogen-storage material employing ti-mn alloy system Hydrogen-storage material employing ti-mn alloy system

1996-04-30

1999-03-30

Sheehan, John

Metal treatment

Stock

Manganese base

148442, 420434, 420583, 420588, 420900, C22C 2200

Patent

active

058883177

ABSTRACT:
The present invention relates to a material for hydrogen-storage constituted by Ti-Mn alloy system which has a high hydrogen-storage capacity, plateau hydrogen dissociation equilibrium pressure, hypostoichiometric composition and crystal structure of C14. Ti-Mn alloy system for hydrogen-storage of the invention which has a C14 crystal structure, is represented as: Ti.sub.u Zr.sub.v Mn.sub.w Cr.sub.x V.sub.y X.sub.z, wherein, X is at least one of element selected from the group consisting of Fe, Al and Ni; u, v, w, x, y and z are mole numbers of each components; 0.7<u<1.0; 0<v<0.3; 1.0.ltoreq.w.ltoreq.1.3; 0.1.ltoreq.x.ltoreq.0.4; 0<y<0.3; 0.ltoreq.z.ltoreq.0.2; 0.7<u+v<1.0; 1.4.ltoreq.w+x.ltoreq.1.7; and, 1.3.ltoreq.w+x+y+z<2.0.

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H. Sawa et al. "Effects of Oxidation Treatment of Ti-Zr-Ni Hydride Electrodes...", Zeitschrift fur Physikalische Chemie Neue Folge, 164:1527-1532 (1989).
S. Wakao et al. "Effects of Partial Substitution and Anodic Oxidation Treatment..." Journal of the Less-Common Metals, 172-174:1219-1226 (1991).
T. Gamo et al., "Formation and Properties of Titanium-Manganese Alloy Hydrides", Int. J. Hydrogen Energy, 10(1):39-47 (1985).
Soo-Ryoung Kim & Jai-Young Lee, "Activation Behaviour of ZrCrNiM.sub.0.05 Metal Hydrides", Journal of Alloys and Compounds, 185:L1-L4 (1992).

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