| 简介 |
A positive electrode active material that is represented by the general formula LixM1-yLyO2 (wherein 0.9≤x≤1.1, 0≤y<0.6, the element M is at least one element selected from the group that consists of Ni and Co, and the element L is at least one element selected from the group that consists of alkali earth elements, transition metal elements other than Ni and Co, rare earth elements, group IIIB elements, and group IVB elements). A surface layer part of the positive electrode active material includes an oxide of an element Me that is at least one element selected from the group that consists of B, Si, P, Ti, V, Mn, Al, Mg, Ca, Zr, W, Nb, Ta, In, Mo, and Sn. |
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