POSITIVE ELECTRODE ACTIVE MATERIAL FOR LITHIUM SECONDARY BATTERY AND LITHIUM SECONDARY BATTERY COMPRISING THE SAME

The present disclosure relates to a positive electrode active material comprising at least one secondary particle comprising an agglomerate of primary macro particles, a method for preparing the same and a lithium secondary battery comprising the same. [0002] According to an embodiment of the present disclosure, by the simultaneous use of the secondary particle comprising primary macro particles and the monolith, it is possible to provide a nickel-based positive electrode active material with reduced particle cracking in the positive electrode active material during a rolling process and improved charge/discharge cycling characteristics.