Title: LaNi.sub.5 is-based metal hydride electrode in Ni-MH rechargeable cells

Abstract

An at least ternary metal alloy of the formula AB.sub.(Z-Y) X.sub.(Y) is disclosed. In this formula, A is selected from the rare earth elements, B is selected from the elements of Groups 8, 9, and 10 of the Periodic Table of the Elements, and X includes at least one of the following: antimony, arsenic, germanium, tin or bismuth. Z is greater than or equal to 4.8 and less than or equal to 6.0. Y is greater than 0 and less than 1. Ternary or higher-order substitutions to the base AB.sub.5 alloys that form strong kinetic interactions with the predominant metals in the base metal hydride are used to form metal alloys with high structural integrity after multiple cycles of hydrogen sorption.

Inventors:

Bugga, Ratnakumar V ^[1]; Fultz, Brent ^[2]; Bowman, Robert ^[3]; Surampudi, Subra Rao ^[4]; Witham, Charles K ^[2]; Hightower, Adrian ^[2]

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+ Show Inventor Affiliations

1. Arcadia, CA
2. Pasadena, CA
3. La Mesa, CA
4. Glendora, CA

Issue Date:

1999-01-01

Research Org.:

California Institute of Technology (CalTech), Pasadena, CA (United States)

OSTI Identifier:

872225

Patent Number(s):

5888665

Assignee:

California Institute of Technology (Pasadena, CA)

Patent Classifications (CPCs):

C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

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C - CHEMISTRY C01 - INORGANIC CHEMISTRY C01B - NON-METALLIC ELEMENTS

C01B3/0047 - {containing a rare earth metal
C01B3/0057 - {also containing nickel}

H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01M - PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY

H01M10/345 - {Gastight metal hydride accumulators}
H01M4/8621 - {containing only metallic or ceramic material, e.g. made by sintering or sputtering}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02E - REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

Y02E60/10 - Energy storage
Y02E60/32 - Hydrogen storage
Y02E60/50 - Fuel cells

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS

Y10S420/90 - Hydrogen storage

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DOE Contract Number:  

FG03-94ER14493

Resource Type:

Patent

Country of Publication:

United States

Language:

English

Subject:

lani; is-based; metal; hydride; electrode; ni-mh; rechargeable; cells; ternary; alloy; formula; z-y; disclosed; selected; rare; earth; elements; 10; periodic; table; following; antimony; arsenic; germanium; bismuth; z; equal; higher-order; substitutions; base; alloys; form; strong; kinetic; interactions; predominant; metals; structural; integrity; multiple; cycles; hydrogen; sorption; earth elements; rare earth; metal alloy; metal hydride; base metal; structural integrity; metal alloys; periodic table; form metal; earth element; ternary metal; multiple cycles; hydrogen sorption; rechargeable cells; rechargeable cell; /429/420/