Chemistry: electrical current producing apparatus – product – and – Current producing cell – elements – subcombinations and... – Electrode
Patent
1997-05-07
1999-05-04
Bell, Bruce F.
Chemistry: electrical current producing apparatus, product, and
Current producing cell, elements, subcombinations and...
Electrode
429 59, 429101, 429223, 204293, 420455, 420460, 420443, 420900, 148538, 148555, 148556, H01M 458
Patent
active
059003340
ABSTRACT:
The present invention provides a hydrogen occluding alloy exhibiting high hydrogen absorption and desorption rates, and excellent initial activation in practical use, and a method of making it. There is provided a hydrogen occluding alloy having a composition comprising, by wt %, 32 to 38% of rare earth elements essentially consisting of La and/or Ce, 0.5 to 3.5% of Al, 0.5 to 10% of Mn, 0.005 to 0.5% of hydrogen, optionally 0.1 to 17% of Co, and the balance being Ni and unavoidable impurities; wherein the alloy has a microstructure characterized in that fine rare earth element hydride is dispersively distributed in a matrix having a CaCu.sub.5 -type crystal structure in a ratio of 0.5 to 20% by area. There are also provided electrodes and batteries containing such alloys, and methods of making and using such electrodes and batteries.
REFERENCES:
patent: 4222770 (1980-09-01), Osumi et al.
patent: 4663143 (1987-05-01), Wallace et al.
patent: 5470404 (1995-11-01), Yamamoto et al.
Chung et al. "A Study of Hydrogen-Induced Amorphization in the La-Ni System" of Journal of Non-Crystalline Solids 110(1989) 203-210, North-Holland Amsterdam No Month Available.
Fukumoto et al. "Hydrogen Absorption-Desorption Characteristics of Rare Earth Hydrogen storage Alloys with Nonstoichiometric Composition" presented at The 35th Battery Symposium in Japan on Nov. 14-16, 1994.
Wescon '94. Western Electronic Show and Convention, Anaheim, Sep. 27-29, 1994 Sep. 27, 1994, Institute of Electrical and Electronics Engineers, pp. 236-241, Dunbar J: "High Performance Nickel Metal Hydride Batteries".
Journal of Alloys and Compounds, vol. 231, No. 1, Dec. 15, 1995, pp. 392-396, (Liv et al.) Surface and Metallographic Microstructure of the La-Added AB2 Compound (Ti, Zr) (Mn, Cr, Ni).sub.2.
Takizawa Yoshio
Wada Masahiro
Bell Bruce F.
Mitsubishi Materials Corporation
LandOfFree
Hydrogen occluding alloy does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydrogen occluding alloy, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydrogen occluding alloy will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1869221