Positive electrode active material for lithium secondary battery including lithium cobalt oxide having core-shell structure, method for producing the same, and positive electrode and secondary battery including the positive electrode active material

摘要

The present invention relates to a positive electrode active material for a lithium secondary battery including a lithium cobalt oxide having a core-shell structure, wherein the lithium cobalt-doped oxide of the core and the lithium cobalt-doped oxide of the shell include each independently three kinds of dopants and satisfy specific conditions, a method for producing the same, and a positive electrode and a secondary battery containing the positive electrode active material.