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

摘要

PROBLEM TO BE SOLVED: To provide: a positive active material for a rechargeable lithium battery which has improved high load characteristics while maintaining high discharge capacity; and a positive electrode for a rechargeable lithium battery and a rechargeable lithium battery including the same.SOLUTION: The positive active material for a rechargeable lithium battery includes a lithium-manganese oxide-based solid solution including primary particles and secondary particles. The secondary particles have a particle diameter (D50) of 1-5 μm, a particle diameter (D90) of less than 8 μm, and a crystallite diameter of 150 nm or less.