Patent ID: 8936881
Filing Date: 2015-01-20
Classification: H01M,Y02E

Abstract:
1. A rechargeable lithium battery, comprising: a negative electrode, a positive electrode, the positive electrode including a lithium manganese oxide represented by the following Chemical Formula 1a or 1b, and an electrolyte, the electrolyte including an alkylsilyl phosphate represented by the following Chemical Formula 2: wherein, L is one of Al, Cr, Fe, Mg, La, Ce, Sr, V, and a combination thereof, 0.90≦a≦1.8, and 0≦b≦0.1, and R1 to R9 are each independently a hydrogen or a C1 to C10 alkyl group, provided that at least one of R wherein, the alkylsilyl phosphate is included in the electrolyte in an amount of 3 wt % to about 5 wt %, based on a total weight of the electrolyte.