POSITIVE ACTIVE MATERIAL FOR RECHARGEABLE LITHIUM BATTERY, AND POSITIVE ELECTRODE FOR RECHARGEABLE LITHIUM BATTERY AND RECHARGEABLE LITHIUM BATTERY INCLUDING THE SAME

摘要

Provided are a positive active material for a lithium secondary battery, a positive electrode for a lithium secondary battery, and a lithium secondary battery including the same. The positive active material includes a lithium manganeseoxide-based solid solution having first and second particles. The second particles have 1-5 μm of a diameter (D50), below 8 μm of a diameter (D90), and below 150 nm of a crystallite diameter.