PRECURSOR OF CATHODE ACTIVE MATERIAL FOR A LITHIUM SECONDARY BATTERY, METHOD FOR MANUFACTURING THE PRECURSOR, CATHODE ACTIVE MATERIAL, AND LITHIUM SECONDARY BATTERY INCLUDING THE CATHODE ACTIVE MATERIAL

Disclosed are a precursor of a positive active material for a rechargeable lithium battery and a preparation method thereof, and a positive active material and a rechargeable lithium battery including the same, and specifically a precursor for a rechargeable lithium battery is represented by the following Chemical Formula 1, wherein a manganese ion concentration deviation in the precursor is within 3 wt%. [Chemical Formula 1]Ni x Co y Mn 1-x-y-z Mz(OH) 2 (0