Nickel electrode and alkali storage battery using the same
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United States of America Patent
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Issued Date -
Feb 9, 2006
app pub date -
Jul 25, 2005
filing date -
Jul 23, 2004
priority date (Note) -
Abandoned
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Abstract
An alkali storage battery using powder generation elements composed of a positive electrode comprising nickel (Ni) oxide as main materials, a negative electrode, a separator and an alkali aqueous solution, wherein materials of said positive electrodes are spherical or elliptic powders whose tapping density is not less than 2.2 g/cc mainly composed of nickel hydroxide (Ni(OH).sub.2), powders comprise core powders with innumerable microscopic concaves and convexes on surfaces mainly composed of spherical or elliptic .beta.-type Ni(OH).sub.2, and fine powders composed of metal cobalt (Co) and/or Co oxide, and fine powders are crushed and pressed in substantially all concave portions of microscopic concaves and convexes of said core powders, thereby integrated with core powders, and surface layers of powders are coated with fine powders and are flattened, and core powders and/or fine powders have innumerable micro pores which penetrate from surfaces to inner portions.
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