Chemistry: electrical current producing apparatus – product – and – Fluid active material or two-fluid electrolyte combination...
Patent
1996-09-26
1998-05-19
Kalafut, Stephen
Chemistry: electrical current producing apparatus, product, and
Fluid active material or two-fluid electrolyte combination...
429 59, 429223, 423443, 423900, H01M 438
Patent
active
057533865
ABSTRACT:
There is provided a hydrogen-absorbing alloy for battery comprising a rapidly-quenched alloy having the composition represented by a general formula ANi.sub.a M.sub.b M'.sub.c T.sub.d (where, A is composed of La, Ce, Pr, Nd and Y, an amount of La content in A is 50-99 wt %, an amount of Ce content is 1-30 wt %, an amount of Pr content is 0-10 wt %, an amount of Nd content is 0-10 wt % and an amount of Y content is 0-10 wt %; M is at least one element selected from Co, Fe and Cu; M' is at least one element selected from Mn and Al; T is at least one element selected from B, Si, S, Cr, Ga, Ge, Mo, Ru, Rh, Pd, Ag, In, Sn, Sb, Bi, P, V, Nb, Ta and W; and a, b, c and d are atomic ratios and satisfy 3.2.ltoreq.a.ltoreq.4.0, 0.4.ltoreq.b.ltoreq.1.0, 0.3.ltoreq.c.ltoreq.0.8, 0.ltoreq.d.ltoreq.0.2, 4.9.ltoreq.a+b+c+d.ltoreq.5.4), characterized in that a hydrogen equilibrium pressure when the number of hydrogen atoms absorbed by one atom of the alloy at a temperature of 60.degree. C. is 0.4 is 0.05-0.6 atm. With the above arrangement, a hydrogen-absorbing alloy capable of realizing a small decrease in capacity under the low-temperature area and high-temperature area, a large electrode capacity in a wide temperature range, and a long life, and a secondary nickel-metal hydride battery using this alloy can be obtained.
REFERENCES:
patent: 4946646 (1990-08-01), Gamo et al.
patent: 5384210 (1995-01-01), Furukawa
patent: 5468260 (1995-11-01), Takee et al.
patent: 5496424 (1996-03-01), Fujitani et al.
Fujitani et al., "Development of hydrogen-absorbing rare earth--Ni alloys for a -20.degree. C refrigeration system," Journal of Alloys and Compounds, 192, 1993, pp. 170-172 (Month Unknown).
Wang et al., "Effects of Al-substitution on hydriding reaction rates of LaNi.sub.5-x Al.sub.x," J. Alloys and Compounds, 191, 1993, pp. 5-7 (Month Unknown).
Van Mal et al., Hydrogen Absorption and Magnetic Properties of LaCo.sub.5x Ni.sub.5-5x Compounds, Journal of Less-Common Metals, 32, 1973, pp. 289-296 (Month Unknown).
Arai Tomohisa
Hashimoto Keisuke
Inaba Takamichi
Inada Shusuke
Kawashima Fumiyuki
Kabushiki Kaisha Toshiba
Kalafut Stephen
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