Manufacturing method of positive electrode active material and positive electrode active material
AssigneeSony Corporation
InventorYuki Takei
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Abstract
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.
Claims7
A positive electrode active material for nonaqueous electrolyte secondary batteries comprising a coating layer containing at least nickel, manganese, and combination thereof on a surface of a complex oxide particle containing lithium and cobalt, 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.
A nonaqueous electrolyte secondary battery comprising:
- a positive electrode including a positive electrode active material having a coating layer containing at least nickel, manganese, and combinations thereof on a surface of a complex oxide particle containing lithium and cobalt, 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;
- a negative electrode;
- a separator disposed on the opposing surface between the positive electrode and the negative electrode;
- and
- a nonaqueous electrolyte.
Dependencies are inferred from the claim text.