POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, METHOD OF PREPARING THE SAME, AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a positive electrode active material having an excellent thermal stability in an electrolyte by enhancing particle strength to prevent crack.SOLUTION: The lithium secondary battery of the present invention includes the positive electrode active material for the lithium secondary battery which contains a void having an average diameter of 10 to 60 nm and a void ratio of 0.5 to 20%.