| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a nonaqueous electrolyte secondary battery with improved thermal stability, a load property, and a charging/discharging property without lowering a battery capacity and charging/discharging efficiency. <P>SOLUTION: A positive electrode 11 used for the nonaqueous electrolyte secondary battery 10 contains a zirconium of not less than 0.01 mol% and not more than 1.0 mol% formed by co-precipitation, a cobalt compound as a cobalt source to which magnesium and/or aluminum is added, and a lithium-containing cobalt complex oxide of a hexagonal system obtained by synthesizing with a lithium compound as a lithium source, expressed by a general formula: LiCo<SB>1-X</SB>M<SB>X</SB>O<SB>2</SB>(M=Zr, Mg, Al). <P>COPYRIGHT: (C)2005,JPO&NCIPI |
