| abstract |
In the present invention, the lithium composite metal oxide particles are mixed with a nano-sol of a ceramic-based ion conductor and heat-treated to form a coating layer containing a ceramic-based ion conductor on the lithium composite metal oxide particle, , A cathode active material capable of minimizing a capacity decrease when applied to a secondary battery and improving lifetime characteristics by forming a coating layer having a ceramic-based ion conductor on the surface of a lithium composite metal oxide particle to a uniform thickness, There is provided a lithium secondary battery comprising the same. |