COMPOSITE POSITIVE ELECTRODE ACTIVE MATERIAL, METHOD FOR MANUFACTURING THE SAME, POSITIVE ELECTRODE INCLUDING THE SAME, AND LITHIUM BATTERY INCLUDING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide: a composite positive electrode active material; a method for manufacturing the composite positive electrode active material; a positive electrode including the composite positive electrode active material; and a lithium battery including the positive electrode.SOLUTION: A composite positive electrode active material comprises a metal phosphate expressed by the following chemical formula 1: MPO, and a lithium complex oxide. A method for manufacturing the composite positive electrode active material; a positive electrode including the composite positive electrode active material; and a lithium battery including the positive electrode are also provided. (In the chemical formula 1, M represents at least one element selected from vanadium (V), niobium (Nb) and tantalum (Ta); 1≤y/x≤1.33; and 4≤z/y≤5.)SELECTED DRAWING: Figure 5