Double-coated lithium battery positive electrode material as well as preparation method and application thereof

The invention discloses a double-coated lithium battery positive electrode material as well as a preparation method and application thereof, and belongs to the technical field of lithium ion batteries. The preparation method comprises the following steps: carrying out surface treatment on the positive electrode material by utilizing low-melting-point Lewis acid salt, forming fast ion conductor point coating on the surface of the positive electrode material, and then carrying out elastic graphene aerogel coating; the double-coated lithium battery positive electrode material is obtained. The low-melting-point Lewis acid salt is used for carrying out surface treatment on the positive electrode material, and the surface residual alkali content of the positive electrode material is reduced through the reaction of the low-melting-point Lewis acid salt and the surface residual alkali; meanwhile, the fast ion conductor point coating layer has excellent ionic conductivity, and the graphene aerogel surface coating laye