| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a positive active material for a nonaqueous battery excellent in heat stability, high load characteristics, and cycle characteristics; and to provide the battery. <P>SOLUTION: The battery contains the positive active material formed by mixing a nickel lithium composite oxide (a positive active material 1) represented by formula (1) and lithium manganese composite oxide (a positive active material 2) represented by formula 2 in a mixing ratio (mass ratio) of 80:20 to 90:10. [Formula 1]: Li<SB>x</SB>Ni<SB>(1-y-z)</SB>Co<SB>y</SB>Mn<SB>z</SB>A<SB>a</SB>O<SB>2</SB>. A is at least one kind of element selected from Mg and Al; 0≤a≤0.05; 0.05≤x≤1.15; 0.10≤y+z≤0.70; 0.00≤z≤0.40.[Formula 2]: Li<SB>s</SB>Mn<SB>2-t</SB>M'<SB>t</SB>O<SB>4</SB>. 0.9≤s; 0.01≤t≤0.15; M' is at least one kind selected from Fe, Co, Ni, Cu, Zn, Al, Sn, Cr, V, Ti, Mg, Ca, Sr, B, Ga, In, Si, and Ge. <P>COPYRIGHT: (C)2009,JPO&INPIT |
