| abstract |
The rechargeable lithium battery includes: a negative electrode including a non-carbon-based negative active material; a positive electrode including a positive active material that reversibly intercalates and deintercalates lithium ions; and an electrolyte that includes a non-aqueous organic solvent that includes ethylene carbonate in an amount of 20 volume % or less, a lithium salt including LiPF 6 , a first additive represented by the following Formula 1 and a second additive that is LiB(C 2 O 4 ) 2 . The electrolyte has a viscosity of 3.02 cP or less: n n n n n n n n n n n n wherein, R 1 and R 2 are independently selected from the group consisting of hydrogen, a halogen, a cyano (CN), a nitro (NO 2 ), and a C1 to C5 fluoroalkyl, provided that at least one of R 1 and R 2 is selected from the group consisting of a halogen, a cyano (CN), a nitro (NO 2 ), and a C1 to C5 fluoroalkyl. |