Electrochemical hydrogen storage alloys for nickel metal hydride batteries, fuel cells and methods of manufacturing same
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United States of America Patent
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Dec 31, 2002
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N/A
app pub date -
Jul 17, 2000
filing date -
Jul 17, 2000
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Expired
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Abstract
Practice of this invention provides, at least, a method of making a hydrogen storage material comprising the steps of: 1. forming a molten mixture comprising nickel and at least one other transition metal element, the combination of which will form a TiNi alloy and including in said molten mixture from about 0.1 at. % to about 10 at. % of one or more elements which will form an alloy which is immiscible in the TiNi-type alloy; and (b) cooling said molten mixture to form a solid alloy-system material by rapid solidification of said molten mixture at a cooling rate of at least 10.sup.3.degree. C. per second.
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