Patent ID: 8492035

Claim:
A rechargeable lithium battery comprising: a positive electrode comprising a positive active material and a first binder; a negative electrode comprising a negative active material and a second binder; and a polymer electrolyte, at least one of the first binder, the second binder, and the polymer electrolyte comprising a polymer composition comprising: a polymer of a first monomer selected from methylmethacrylate (MMA) having no aromatic group, acrylonitrile (AN) having no aromatic group, or a combination thereof, and a second monomer of ethylene oxide (EO), the polymer being a statistical copolymer or an alternating copolymer; and a lithium salt, the polymer composition being soluble in N-methylpyrrolidone, the polymer composition being separately insoluble in each of methanol and tetrahydrofuran.