| abstract |
A first metal oxide having a layered crystal structure; And a second metal oxide having a rocksalt crystal structure, wherein the first metal oxide and the second metal oxide form a complex, and the complex is a mixture of elements of Group 1 and Group 2 of the Periodic Table of Elements Disclosed is a composite cathode active material doped with at least one doping element other than lithium selected, a method for producing the same, and a cathode and a lithium battery employing the cathode active material. The composite cathode active material has improved structural stability, thereby improving lifetime characteristics of the lithium battery and reducing the voltage reduction phenomenon. |