PROCESS FOR COATING AN OXIDE MATERIAL

The present disclosure relates to a process for coating an oxide material comprising:(a) providing a particulate material chosen from lithiated nickel-cobalt aluminum oxides, lithiated cobalt-manganese oxides, and lithiated layered nickel-cobalt-manganese oxides,(b) treating the cathode active material with a metal alkoxide, metal amide, alkyl metal compound, metal halide, or metal hydride at a pressure ranging from 5 mbar to 1 bar above ambient pressure,(c) deactivating the material obtained in step (b) with a HF containing gas at ambient pressure, wherein step (b) is carried out in a mechanical mixer chosen from compulsory mixers and free-fall mixers, or step (b) is carried out using a moving bed or a fixed bed.