非水電解質二次電池用正極活物質、その製造方法、非水電解質二次電池用正極、及び非水電解質二次電池

Japanese Patent JP6848333

B2

PROBLEM TO BE SOLVED: To provide: a positive electrode active material for a nonaqueous electrolyte secondary battery, which has both of a high discharge capacity and a high charge/discharge cycle performance; and a method of manufacturing the positive electrode active material for a nonaqueous electrolyte secondary battery.SOLUTION: A positive electrode active material for a nonaqueous electrolyte secondary battery comprises a lithium transition metal composite oxide. The lithium transition metal composite oxide has an α-NaFeOstructure, of which the transition metal element (Me) includes Mn and at least one of Co and Ni; the mole ratio (Mn/Me) of Mn to Me is given by 0.5