Positive electrode active material precursor, positive electrode active material, and method for producing same

Disclosed are a positive electrode active material precursor for a rechargeable lithium battery, a method for preparing a positive electrode active material using the same, and a positive electrode active material for a rechargeable lithium battery. A positive active material precursor for a rechargeable lithium battery in the form of core-shell particles includes a core and a shell surrounding the core, the core including a nickel-manganese-based composite hydroxide containing nickel and manganese, the shell including a nickel-manganese-based composite hydroxide containing nickel, manganese and a filler element, and the filler element including at least one selected from the group consisting of Al, Mo, Ti, W, and Zr. 公开了用于可再充电锂电池的正极活性物质前体、使用该正极活性物质前体制备正极活性物质的方法以及用于可再充电锂电池的正极活性物质。核-壳颗粒形式的用于可再充电锂电池的正极活性物质前体包括核和围绕核的壳，核包括含有镍和锰的镍锰类复合氢氧化物，壳包括含有镍、锰和填料元素的镍锰类复合氢氧化物，并且填料元素包括选自由Al、Mo、Ti、W和Zr组成的组中的至少一种。