Electrochemical device having electrolyte including disiloxane
View Patent ↗One example of the disiloxanes include a backbone with a first silicon and a second silicon. The first silicon is linked to a first substituent selected from a group consisting of: a first side chain that includes a cyclic carbonate moiety; a first side chain that includes a poly(alkylene oxide) moiety; and a first cross link links the disiloxane to a second siloxane and that includes a poly(alkylene oxide) moiety. In some instance, the second silicon is linked to a second substituent selected from a group consisting of: a second side chain that includes a cyclic carbonate moiety, and a second side chain that includes a poly(alkylene oxide) moiety.
1. An electrochemical device comprising an electrolyte, wherein the electrolyte comprises a disiloxane represented by formula I:
wherein R 1 is an alkyl group; R 2 is an alkyl group; R 3 is an alkyl group; R 4 is an alkyl group; R 5 is formula I-A, formula I-B, or formula I-C; R 6 is an alkyl group, formula I-D, or formula I-E;
wherein R 9 is nil or a spacer, R 10 is hydrogen or alkyl; R 11 is alkyl; and n is 1 to 12;
wherein R 12 is an organic spacer and p is 1 to 2;
wherein R 14 is nil or a spacer; R 15 is nil or a spacer; R 16 is hydrogen or alkyl; second siloxane represents another siloxane and n is 1 to 12;
wherein R 17 is nil or a spacer; R 18 is hydrogen or alkyl; R 19 is alkyl; and q is 1 to 12;
wherein R 20 is an organic spacer and r is 1 to 2.
2. The device of claim 1 , wherein R 5 is represented by formula I-A and R 6 is represented by formula I-E.
3. The device of claim 1 , wherein each organic spacer is selected from the group consisting of an unsubstituted alkylene, a substituted alkylene, an unsubstituted alkylene oxide, a substituted alkylene oxide, a substituted bivalent ether group, and an unsubstituted bivalent ether.