Hydrogen absorbing alloy and secondary battery

Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode

Reexamination Certificate

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C420S900000

Reexamination Certificate

active

07005212

ABSTRACT:
The present invention provides a hydrogen absorbing alloy containing as a principal phase at least one phase selected from the group consisting of a second phase having a rhombohedral crystal structure and a first phase having a crystal structure of a hexagonal system excluding a phase having a CaCu5type structure, wherein a content of a phase having a crystal structure of AB2type is not higher than 10% by volume including 0% by volume and the hydrogen absorbing alloy has a composition represented by general formula (1) given below:in-line-formulae description="In-line Formulae" end="lead"?R1-a-bMgaTbNiZ-X-Y-αM1XM2YMnα.   (1)in-line-formulae description="In-line Formulae" end="tail"?

REFERENCES:
patent: 5922491 (1999-07-01), Ikawa et al.
patent: 6130006 (2000-10-01), Kohno et al.
patent: 6200705 (2001-03-01), Hayashida et al.
patent: 6214492 (2001-04-01), Kono et al.
patent: 6248475 (2001-06-01), Hayashida et al.
patent: 6268084 (2001-07-01), Hayashida et al.
patent: 1219001 (1999-06-01), None
patent: 62-271348 (1987-11-01), None
patent: 62-271349 (1987-11-01), None
patent: 9-25529 (1997-01-01), None
patent: WO97-03213 (1997-01-01), None
patent: 10-1731 (1998-01-01), None
patent: 11-29832 (1999-02-01), None
patent: 11-217643 (1999-08-01), None
patent: 11-323469 (1999-11-01), None
patent: 2000-73132 (2000-03-01), None
patent: WO 99/54517 (1999-10-01), None
H. Oesterreicher, J. Clinton and H. Bittner, Hydrides of La-Ni Compounds, Mat. Res. Bull. vol. 11, pp. 1241-1248, 1976, Pergamon Press, Inc.
H. Oesterreicher and H. Bittner, Hydride Formation in La1-xMgxNi2*, Journal of the Less-Common Metals, 73 (1980) pp. 339-344.
Abstract of the Japan Institute of Metals, 120th Meeting, (1997) 289; K. Kadir, et al. Mar. 26, 1997.
K. Kadir, et al., Journal of Alloys and Compounds, vol. 257, pp. 115-121, XP-004116169, “Synthesis and Structure Determination of a New Series of Hydrogen Storage Alloys; RMg2Nig(R=La, Ce, Pr, Nd, Sm, and Gd) Built from MgNi2Laves-Type Layers Alternating with AB5Layers”, Jul. 25, 1997.
Patent Abstracts of Japan, JP 05-043968, Feb. 23, 1993.
H. Fujii, et al., Journal of Alloys and Compounds, vol. 219, No. 1-2, pp. 10-15, XP-004086448, Effect of Interstitial Hydrogen and Nitrogen on Magnetic and Structural Properties of R2T17(R=Y, Ce and Sm; T=Fe, Co and Ni), Mar. 15, 1995.
K. Dutta, et al., International Journal of Hydrogen Energy, vol. 18, No. 5, pp. 397-403, XP-000362529, “Synthesis and Hydrogen Storage Characteristics of the Composite Alloy La2Mg17-x wt%MmNi4,5Al0.5”, May 1, 1993.
P. Mandel, et al., Journal of Alloys and Compounds, vol. 184, No. 1, pp. 1-9, AN 4216944, XP-002239000, “Synthesis, Characterization and Hydrogenation Behaviour of Mg-xwt.%FeTi(Mn) and La/SUB 2/Mg/SUB 17/-xwt.%LaNi/SUB 5/-New Hydrogen Storage Composite Alloys”, Jun. 5, 1992 (Abstract only).
Patent Abstracts of Japan, JP 10-001731, Jan. 6, 1998.
A. Kolomiets, et al., Journal of Alloys and Compounds, vol. 262-263, XP-004102958, pp. 206-210, “RNiAL Hydrides and their Magnetic Properties”, Nov. 14, 1997.
G. Liang, et al., Journal of Alloys and Compounds, vol. 268, No. 1-2, XP-004130722, pp. 302-307, “Hydrogen Absorption Properties of a Mechanically Milled Mg-50 WT. % LaNi5Composite”, Mar. 27, 1998.
K. J. Gross, et al., Journal of Alloys and Compounds, vol. 269, No. 1-2, XP-004138721, pp. 259-270, “Mechanically Milled Mg Composites for Hydrogen Storage: The Relationship Between Morphology and Kinetics”, May 1, 1998.
K. Kadir, et al., Journal of Alloys and Compounds vol. 287, No. 1-2, XP-004182555, pp. 264-270, “Structural Investigation and Hydrogen Capacity of YMg2Nigand (Y0.5Ca0.5) (MgCa)Ni9: New Phases in the AB2CgSystem Isostructural with LaMg2Nig”, Jun. 1, 1999.
Z. Wenhui, et al., Database Inspec (Online), Institute of Electrical Engineers, AN 6365632, XP-002276041, “Mechanical Alloying Induced Solid State Reaction and Formation of Nano-Phase Composite Hydrogen Storage Alloys in MmNi/SUB 5-X/ (Co, Al, Mn) / SUB X//Mg System”, May 18, 1999 (English Abstract of Acta Metallurgica Sinica, vol. 35, No. 5, pp. 541-545).
V. A. Yartys, et al., Database Inspec (Online), Institute of Electrical Engineers, AN 4606377, XP-002276042, “Hydrides of R/SUB 3/Ni/SUB 6/(Al, Ga) / SUB 2/ (R=Y, Sm, Gd, Tb, Dy, Ho, Er) Intermetallic Compounds: Structure and Properties”, Jun. 8-12, 1992 (English Abstract of Third International Sympoisum On Metal-Hydrogen Systems, Fundamentals and Applications, vol. 179, No. 1-2, pp. 269-273, 1993).
M. Terzieva, et al., Journal of Alloys and Compounds, vol. 267, No. 1-2, pp. 235-239, XP-004122005, “Hydriding and Dehydriding Characteristics of Mg-LaNi5Composite Materials Prepared by Mechanical Alloying”, Mar. 6, 1998.

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