| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lithium metal complex oxide capable of obtaining a nonaqueous electrolyte secondary battery with a high initial discharge capacity, a small irreversible capacity, and high output characteristics at high and low temperatures. <P>SOLUTION: The lithium metal complex oxide is expressed in formula: Li<SB>x</SB>(Ni<SB>1-y</SB>Co<SB>y</SB>)<SB>1-z</SB>M<SB>z</SB>O<SB>2</SB>(0.98≤x≤1.10, 0.05≤y≤0.4, 0.01≤z≤0.2, provided that, M is one or more kind of metal element selected from a group consisting of Al, Mg, Mn, Ti, Fe, Cu, Zn and Ga.), and contains SO<SB>4</SB>ion by 0.4 mass % or more and 2.5 mass % or less, and the space share of lithium determined by Riedvelt analysis using an X-ray refraction chart is 98% or more. It is preferable that the C adhesion amount is 0.12 mass % or less, and Karl Fischer moisture percentage at 180°C is 0.2 mass % or less. <P>COPYRIGHT: (C)2004,JPO&NCIPI |
