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

Disclosed are a precursor for a rechargeable lithium battery, a positive active material including the same, a preparation method thereof, and a rechargeable lithium battery including the positive active material. More particularly, the present invention relates to a precursor including a sheet-shaped plate having a thickness of about 1 nm to about 30 nm and that is represented by the following Chemical Formula 1. [Chemical Formula 1] NiCoMnM(OH) In the above Chemical Formula 1, 0