| 摘要 |
The present invention relates to a preparation method of a cathode active material for a lithium secondary battery, and a cathode active material, and can provide a preparation method of a cathode active material for a lithium secondary battery, comprising the following steps: mixing a first solvent, a first Al source material soluble in the first solvent, and a second Al source material insoluble in the first solvent to prepare a coating solution; injecting a lithium composite oxide capable of intercalation/deintercalation of lithium ions to the coating solution to coat, by stirring, the first Al source material and the second Al source material on the surface of the lithium composite oxide capable of intercalation/deintercalation of lithium ions; and firing the lithium composite oxide capable of intercalation/deintercalation of lithium ions coated with the first Al source material and the second Al source material on the surface thereof. |
