Lithium battery

A lithium battery, comprising:

• a cathode including a cathode active material;
• an anode including an anode active material;
• and
• an organic electrolytic solution between the cathode and the anode,
• wherein:
• the cathode active material includes a first lithium transition metal oxide and a second lithium transition metal oxide,
• the first lithium transition metal oxide and the second lithium transition metal oxide have different particle diameters,
• the second lithium transition metal oxide includes primary particles having a particle diameter of about 1 μm or more,
• an amount of the bicyclic sulfate-based compound is from about 0.1 wt % to about 5 wt % based on a total weight of the organic electrolytic solution,
• a particle diameter ratio of the first lithium transition metal oxide to the second lithium transition metal oxide is from about 3:1 to about 40:1,
• the first lithium transition metal oxide has a particle diameter of greater than about 8 μm to about 30 μm,
• the second lithium transition metal oxide has a particle diameter of about 1 μm to less than about 8 μm,
• a weight ratio of the first lithium transition metal oxide to the second lithium transition metal oxide is from about 78:22 to about 60:40, and
• the organic electrolytic solution includes a first lithium salt, an organic solvent, and a bicyclic sulfate-based compound represented by Formula 1 below:
• wherein, in Formula 1, each of A1, A2, A3, and A4 is independently a covalent bond, a substituted or unsubstituted C1-C5 alkylene group, a carbonyl group, or a sulfinyl group, wherein both A1 and A2 are not a covalent bond and both A3 and A4 are not a covalent bond.