Positive electrode material and battery for nonaqueous electrolyte secondary battery
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United States of America Patent
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Sep 23, 2003
Grant Date -
Sep 27, 2001
app pub date -
Feb 26, 2001
filing date -
Mar 3, 2000
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Abstract
A positive electrode active material for a nonaqueous electrolyte secondary battery includes at least a lithium-containing manganese layered composite oxide represented by the general formula Li.sub.1-x Mn.sub.1-y M.sub.y O.sub.2-.delta.. The lithium-containing manganese composite oxide is deficient in lithium with respect to the stoichiometric composition of a layered crystal structure represented by the general formula LiMeO.sub.2. Part of Mn is replaced by a substitute metal such as Co, Ni, Fe, Al, Ga, In, V, Nb, Ta, Ti, Zr, Ce or Cr.
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