| 摘要 |
A lithium secondary battery characterized by a high power capacity and a long service life has a negative electrode 3, a positive electrode 2 and a non-aqueous electrolyte containing lithium salt. The lithium secondary battery is characterized by further comprising multiple oxide represented by a general formula Lix+aMn2-a-bMbQcO4+d (where M denotes at least one element selected from among Ni, Fe, Co, Cu and Cr; Q denotes at least one element selected from among C, N, S, P, Si, F, Cl, I and Br; and x, a, b, c and d are within the range of 0<=x<=) 1.1, 0<=a<=0.5, 0.05<=b<=1.0, 0.000001<=c<0.05 and 0<=d<=0.1, respectively) as a positive electrode activator.
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