PROCESS FOR COATING AN OXIDE MATERIAL

The present invention is related to a process for coating an oxide material, said process comprising the following steps: (a) providing a particulate material selected from lithiated nickel-cobalt aluminum oxides, lithiated cobalt-manganese oxides and lithiated layered nickel-cobalt-manganese oxides, (b) treating said cathode active material with a metal alkoxide or metal amide or alkyl metal compound or metal halide or metal hydride at a pressure that is in the range of from 5 mbar to 1 bar above ambient pressure, (c) deactivating the material obtained in step (b) with a moisture or a HF containing gas at ambient pressure, wherein step (b) is carried out in a mixer that mechanically introduces mixing energy into the particulate material, or by way of a moving bed or fixed bed. 本发明涉及一种涂覆氧化物材料的方法，所述方法包括以下步骤：(a)提供选自锂化镍钴铝氧化物、锂化钴锰氧化物和锂化层状镍钴锰氧化物的颗粒材料，(b)在比环境压力高5毫巴至1巴的压力下用金属醇盐或金属氨基化物或烷基金属化合物或金属卤化物或金属氢化物处理所述阴极活性材料，(c)在环境压力下用含有水分或HF的气体使由步骤(b)中获得的材料失活，其中步骤(b)在将混合能机械地引入颗粒材料中的混合器中进行，或者借助移动床或固定床进行。