| 摘要 |
PROBLEM TO BE SOLVED: To obtain a lithium manganese multi component oxide greatly improved in high-temperature stability, and to provide a method for manufacturing the same. SOLUTION: The lithium manganese multi component oxide of a spinel type crystal structure which is expressed by the formula Li[Mn2- X- YLiXMY]O4+δ (where M is at least one kind selected from group IIa, group IIIb and group VIII of second and third periods, 0.02<=X<=0.10, 0.05<=Y<=0.30, -0.2<=δ<=0.2), consists of a spinel type crystal structure of <=0.22 deg. in the half band width of the (400) face by powder X-ray diffraction using CuKα and is <=2 μm in the average grain size of the crystal particles by its SEM observation, and the method for manufacturing the same and a lithium secondary battery using this lithium manganese multi component oxide as its positive pole substance are also provided. |
