Electrolyte comprising eutectic mixture and electrochromic device using the same
First Claim
1. 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 R1 is a hydrogen atom, C1˜
C20 alkyl group, C1˜
C20 alkylamine group, alkenyl group, aryl group or allyl group;
R2 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, R2 is null;
Y is at least one anion selected from the group consisting of F−
, Cl−
, Br−
, I−
, NO3−
, N(CN)2−
, BF4−
, ClO4−
, RCOO−
;
PF6−
, (CF3)2PF4−
, (CF3)3PF3−
, (CF3)4PF2−
, (CF3)5PF−
, (CF3)6P−
, CF3CF2(CF3)2CO−
, (SF5)3C−
, CF3CO2−
, CH3CO2−
, and SCN; and
n is an integer of between 1 and 10.
2 Assignments
0 Petitions
Accused Products
Abstract
Disclosed is an electrolyte for electrochromic devices, which includes a eutectic mixture comprising: (a) a compound having an acidic functional group and basic functional group; and (b) an ionizable lithium salt. An electrochromic device using the same electrolyte is also disclosed. Because the electrochromic device uses the electrolyte comprising the eutectic mixture, which is cost-efficient and has excellent thermal and chemical stability, there are no problems related with evaporation and exhaustion as well as flammability of electrolyte. Additionally, it is possible to minimize side reactions with constitutional elements of an electrochromic device and electrolyte, thereby improving the safety. Further, it is also possible to improve the quality of an electrochromic device by virtue of a broad electrochemical window and high electroconductivity of the eutectic mixture.
23 Citations
15 Claims
-
1. 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 R1 is a hydrogen atom, C1˜
C20 alkyl group, C1˜
C20 alkylamine group, alkenyl group, aryl group or allyl group;R2 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, R2 is null; Y is at least one anion selected from the group consisting of F−
, Cl−
, Br−
, I−
, NO3−
, N(CN)2−
, BF4−
, ClO4−
, RCOO−
;
PF6−
, (CF3)2PF4−
, (CF3)3PF3−
, (CF3)4PF2−
, (CF3)5PF−
, (CF3)6P−
, CF3CF2(CF3)2CO−
, (SF5)3C−
, CF3CO2−
, CH3CO2−
, and SCN; andn is an integer of between 1 and 10. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
Specification