CATHODE ACTIVE MATERIAL AND LITHIUM SECONDARY BATTERIES COMPRISING THE SAME

摘要

The present invention relates to a positive electrode active material in which positive ion metal is added to a lithium metal composite oxide of a lithium-superfluous layer structure capable of expression of high capacity, and to a lithium secondary battery comprising the same. According to the present invention, the lithium secondary battery is manufactured by using the positive electrode active material so that capacity per volume and lifespan properties can be improved.