| 摘要 |
A positive electrode active material for nonaqueous electrolyte secondary batteries includes a coating layer containing at least nickel (Ni) and/or manganese (Mn) on the surface of a complex oxide particle containing lithium (Li) and cobalt (Co), wherein a binding energy value obtained by analysis of a surface state by an ESCA surface analysis on the surface of the coating layer is 642.0 eV or more and not more than 642.5 eV in an Mn2p3 peak, and a peak interval of Co—Mn is 137.6 eV or more and not more than 138.0 eV.
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