Positive active material for rechargeable lithium battery, method of preparing the same, and rechargeable lithium battery including the same

A positive active material for a rechargeable lithium battery includes pores having an average diameter of about 10 nm to about 60 nm and a porosity of about 0.5 % to about 20 %. Also disclosed is a method of preparing the positive active material, a rechargeable lithium battery including the positive active material, and use of the positive active material in a rechargeable lithium battery.