Patent ID: 6479191
Filing Date: 2002-11-12
Classification: H01M,Y02E

Abstract:
An electrolyte for a lithium secondary battery comprising (i) a non-aqueous solvent, (ii) an electrolyte salt dissolved therein and (iii) (a) at least one alkyne derivative having the formulae (I), (II), and (III) or (b) at least one alkyne carbonate derivative having the formula (IV):R1â€”Câ‰¡Câ€”R2â€ƒâ€ƒ(I) wherein R1, R2, R3, and R4 independently indicate a member selected from the group consisting of a C1, to C12 alkyl group, a C3 to C6 cycloalkyl group, an aryl group, and a hydrogen atom; and wherein R5, R6, and R7 in Y1, Y2, and Y3 independently indicate a member selected from the group consisting of a C1, to C12 alkyl group, a C3 to C6 cycloalkyl group, and an aryl group; and further wherein n is an integer selected from the group consisting of 1 and 2.