Cathode active material for lithium secondary battery and method of manufacturing the same

A cathode active material for a lithium secondary battery comprising:

• a lithium metal oxide particle core part;
• and
• an organic compound coating layer including an organic compound, wherein a weight ratio of the lithium metal oxide particles to the organic compound is 99.9:0.1 to 90:10,
• wherein the organic compound comprises a disulfide compound represented by Structural Formula 2 below:
• wherein, in Structural Formula 2, R5 and R6 are each independently oxygen or sulfur, and
• R7 and R8 are each independently hydrogen;
• an alkyl group having 1 to 10 carbon atoms;
• an alkyl group having 1 to 10 carbon atoms in which at least one hydrogen is substituted with a hydroxyl group;
• an alkoxy group having 1 to 10 carbon atoms;
• a hydroxyl group;
• an amine group in which at least one hydrogen is unsubstituted or substituted with an alkyl group having 1 to 10 carbon atoms;
• a mercapto group;
• or a carbonyl group,
• provided that, when R5 and R6 are sulfur,
• R7 and R8 are each independently hydrogen;
• an alkyl group having 1 to 10 carbon atoms;
• an alkyl group having 1 to 10 carbon atoms in which at least one hydrogen is substituted with a hydroxyl group;
• an alkoxy group having 1 to 10 carbon atoms;
• a hydroxyl group;
• a mercapto group;
• or a carbonyl group.