Metal alanates doped with oxygen
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United States of America Patent
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Issued Date -
Mar 30, 2006
app pub date -
Sep 27, 2004
filing date -
Sep 27, 2004
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Abstract
A metal alanate material useful for reversible hydrogen storage as in fuel cell applications includes a metal alanate material that is doped with oxygen. In discussed examples, the metal alanate material is one of an alkali metal alanate or mixed alkali metal-alkaline earth metal alanate. In some examples, the oxygen is doped into the metal alanate from an unstable solid oxide having -.DELTA.G.sub.f.sup.0<200 Kcal/mole or from a hydroxide, a carbonate, a nitrate or an oxygen gas mixture. The metal alanate in one example is doped with between 0.5 mol % and 30 mol % oxygen.
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