Electrochemically active material for the negative electrode of a secondary electrochemical cell having an alkaline electrolyte
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United States of America Patent
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Issued Date -
Aug 14, 2003
app pub date -
Jan 24, 2003
filing date -
Jan 31, 2002
priority date (Note) -
Abandoned
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Abstract
The present invention provides an electrochemically active material comprising a hydridable alloy whose surface is covered in a protective layer constituted mainly by a nickel hydroxide. The layer is preferably constituted by at least 80% by weight of nickel hydroxide and includes up to 20% by weight of at least one other metal which may be taken from Mn, Al, Co, Cr, Fe, and Cu. Also preferably, the layer represents 1% to 4% by weight of the hydridable alloy.
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