| abstract |
The present invention relates to a positive electrode active material for a lithium secondary battery, a method for producing the same, and a lithium secondary battery including the same, which can reversibly intercalate and deintercalate lithium. And a coating layer disposed on at least a portion of a surface of the compound, wherein the coating layer comprises Li 3 PO 4 or LiF, and the coating layer is a composite coating layer further comprising a lithium metal oxide, a metal oxide, or a combination thereof At least one of the lithium metal oxide and the metal oxide includes at least one metal M, and the metal M includes at least one element selected from the group consisting of Mg, Ti, Al, Si, Sn and Zr A first positive electrode active material; And compounds capable of reversible intercalation and deintercalation of lithium; And a coating layer disposed on at least a portion of a surface of the compound, wherein the coating layer comprises Li 3 PO 4 or LiF, and the coating layer is a composite coating layer further comprising a lithium metal oxide, a metal oxide, or a combination thereof At least one of the lithium metal oxide and the metal oxide is selected from the group consisting of Mg, Ti, Al, Si, Sn and Zr, and the metal M ''Is a metal different from M in the first cathode active material. The present invention also provides a cathode active material for a lithium secondary battery. |