LITHIUM-METAL OXIDE AND LITHIUM SECONDARY BATTERY HAVING THE SAME

摘要

The present invention relates to a lithium metal oxide and, more specifically, to a lithium metal oxide represented by chemical formula 1, Li_(1+x)Ni_aM_(1-2a-x)Mn_bO_(2+x), where x, a and b are the same as stated in claim 1, and to a lithium secondary battery including the lithium metal oxide. The lithium metal oxide can be applied to a cathode material, exhibits high capacity of battery, and mitigates reduction of capacity due to repetitive charge and discharge.