| 摘要 |
A positive electrode material for a lithium secondary battery includes a lithium manganese oxide having a spinel structure, expressed by one of the general formulae; LixMnyO4(where 1<=x<=1.33 and 3-x<y<=3.1-x); and LixMnyMzO4(where M is a metallic element other than Li and Mn, 1<=x<=1.33, 3-x-z<y<=3.1-x-z, and o<z<=1.0). The metallic element M may be at least one selected from the group consisting of Mg, Al, Cr and Ni. A lithium secondary battery includes at least a positive electrode of the positive electrode material.
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