| 摘要 |
PROBLEM TO BE SOLVED: To enhance the output characteristics at low temperature of a layered lithium nickel manganese composite oxide. SOLUTION: A mixture of a layered lithium nickel manganese composite oxide represented by general formula (I) LiXNiYMnZQ(1- Y- Z) O2 , (in the formula, X is 0<X<=1.2; Y is 0.7<=Y/(1-Y)<=9, and 0<=(1-Y-Z)<=0.5; and Q is at least one selected from the group comprising Al, Co, and Fe.) and a spinel type nickel manganese composite oxide represented by general formula (II) LiX2 Mn(2- Y2) RY2 O4 , (in the formula, X2 is 0<X2<=1.2; Y is 0<=Y<=0.5; R is at least one selected from the group comprising Al, Fe, Ga, Bi, Sn, V, Cr, Co, Ni, Cu, Zn, Mg, Ti, Ge, Nb, Ta, Zr, and Li.) is used in the positive electrode material of the lithium secondary battery. |
