| 摘要 |
A composite cathode material, comprising a carbon core and a carbon coating layer; the carbon coating layer is a carbon layer coating the surface of the carbon core; both the carbon core and the carbon coating layer comprise doping elements, the doping elements being at least one of the elements of N, P, B, S, O, F, Cl and H. Also provided are a preparation method of the composite cathode material, cathode pole piece of a lithium ion secondary battery comprising the composite cathode material, and lithium ion secondary battery comprising the cathode active material of the lithium ion secondary battery. |
