NICKEL-METAL HYDRIDE RECHARGEABLE CELL
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United States of America Patent
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Issued Date -
Jun 18, 2009
app pub date -
Oct 23, 2006
filing date -
Oct 28, 2005
priority date (Note) -
Abandoned
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Abstract
A positive electrode plate (3) of a nickel-metal hydride rechargeable cell contains nickel hydroxide particles (18), a coating layer (19) covering at least a part of a surface of each nickel hydroxide particle (18) and mainly composed of a cobalt compound having an average valence of cobalt more than 2, and Nb-based particles (15) and Y-based particles (16) distributed among the nickel hydroxide particles (18). A negative electrode plate (4) contains a hydrogen storage alloy having a Co content of equal to or less than 2.0% by mass, a separator (5) contains fiber having a sulfo group, and an alkaline electrolyte solution contains sodium hydroxide as a main solute.
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