Hydrogen storage material including a modified Ti-Mn2 alloy
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United States of America Patent
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Issued Date -
Jun 5, 2003
app pub date -
Nov 30, 2001
filing date -
Nov 30, 2001
priority date (Note) -
Abandoned
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Abstract
A modified Ti--Mn.sub.2 hydrogen storage alloy. The alloy generally is comprised of Ti and Mn. A generic formula for the alloy is: Ti.sub.Q-XZr.sub.XMn.sub.Z-YA.sub.Y, where A is generally one or more of V, Cr, Fe, Ni and Al. Most preferably A is one or more of V, Cr, and Fe. The subscript Q is preferably between 0.9 and 1.1, and most preferably Q is 1.0. The subscript X is between 0.0 and 0.35, more preferably X is between 0.1 and 0.2, and most preferably X is between 0.1 and 0.15. The subscript Y is preferably between 0.3 and 1.8, more preferably Y is between 0.6 and 1.2,and most preferably Y is between 0.6 and 1.0. The subscript Z is preferably between 1.8 and 2.1,and most preferably Z is between 1.8 and 2.0. The alloys are generally single phase materials, exhibiting a hexagonal C.sub.14 Laves phase crystalline structure.
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