Nickel based compound positive electrode material primary cell
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United States of America Patent
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Issued Date -
Feb 9, 2006
app pub date -
Aug 29, 2003
filing date -
Aug 30, 2002
priority date (Note) -
Abandoned
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Abstract
According to the invention, a high capacity alkali primary battery excellent in high rate characteristics is obtained using a positive electrode active substance, wherein the particles of the nickel oxyhydroxide base compound as the positive electrode active substance has a surface coated with a higher oxide of cobalt and comprises zinc and cobalt separately or an eutectic crystal with zinc and cobalt, and a half-width of an X-ray diffraction peak at a diffraction angle at around 18.degree. in an X-ray diffraction pattern of 0.4 to 0.48 obtained by using a CuK.alpha. line as an X-ray source. A further excellent battery is obtained by using zinc containing a powder with a particle diameter of 75 .mu.m or less in the range of 10% by mass or more and 20% by mass or less.
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