Patent ID: 7630117

Claim:
An electrolyte for electrochromic devices, which includes a eutectic mixture comprising: (a) a compound having an amide group; and (b) an ionizable lithium salt, wherein a molar ratio (%) of the compound having an amide group to the ionizable lithium salt ranges from 2:1 to 6:1 and the eutectic mixture is represented by the following Formula 1: wherein R 1 is a hydrogen atom, C1˜C20 alkyl group, C1˜C20 alkylamine group, alkenyl group, aryl group or allyl group; R 2 can be a hydrogen atom, C1˜C20 alkyl group, alkenyl group, aryl group or allyl group; X is a oxygen, carbon or nitrogen atom, with the proviso that where X is oxygen, R 2 is null; Y is at least one anion selected from the group consisting of F − , Cl − , Br − , I − , NO 3 − , N(CN) 2 − , BF 4 − , ClO 4 − , RCOO − ; PF 6 − , (CF 3 ) 2 PF 4 − , (CF 3 ) 3 PF 3 − , (CF 3 ) 4 PF 2 − , (CF 3 ) 5 PF − , (CF 3 ) 6 P − , CF 3 CF 2 (CF 3 ) 2 CO − , (SF 5 ) 3 C − , CF 3 CO 2 − , CH 3 CO 2 − , and SCN; and n is an integer of between 1 and 10.