| 主权项 |
1. A rechargeable lithium battery comprising:
a positive electrode comprising a positive active material comprising pores having an average diameter of about 10 nm to about 60 nm, and a porosity of about 0.5% to about 20%, the positive active material comprising a lithium metal oxide represented by Chemical Formula 1, Chemical Formula 2 or Chemical Formula 3:
LiaNixCoyMnzMkO2 Chemical Formula 1 wherein, in Chemical Formula 1,
M is selected from the group consisting of Al, Mg, Ti, Zr, and combinations thereof,0.95≦a≦1.2,0.45≦x≦0.65,0.15≦y≦0.25,0.15<z≦0.35,0≦k≦0.1, andx+y+z+k=1;
LiaNixCoyMnzO2 Chemical Formula 2 wherein, in Chemical Formula 2,
0.95≦a≦1.10,0.55≦x≦0.65,0.15≦y≦0.25,0.15<z≦0.25, andx+y+z=1; and
LiaNixCOyMnzO2 Chemical Formula 3 wherein, in Chemical Formula 3,
0.95≦a≦1.10,0.45≦x≦0.55,0.15≦y≦0.25,0.25<z≦0.35, andx+y+z=1; a negative electrode; and an electrolyte. |
