Patent ID: 8034491

Claim:
An organic electrolytic solution comprising: a lithium salt; an organic solvent comprising a first solvent and a second solvent, the first solvent having a high dielectric constant and the second solvent having a low boiling point; and a surfactant comprising a hydrophilic segment having two ends, each end being connected to a hydrophobic segment, wherein the surfactant is selected from the group consisting of compounds represented by Formulae 1 to 3: Y-[A] a -X (1) Y-[A] a -[B] b -X (2) Y-[A] a -[B] b -[C] c -X (3) where each of X and Y is a (hetero)aryl group selected from the group consisting of phenyl and imidazolyl, each of A, B, and C is a repeating unit selected from the group consisting of oxyethylene, oxypropylene, oxybutylene, each of a, b, and c is an integer ranging from 1 to 100, and R is a linear or branched alkyl group having from 1 to 20 carbon atoms.