Siloxane copolymer and solid polymer electrolyte comprising such siloxane copolymers
A silicone polyether for use in forming a solid polymer electrolyte film, the silicone polyether comprising a heterocyclic moiety. The silicone polyether comprising the heterocyclic moiety may be used to provide an electrolyte composition suitable for use in an electrochemical device. The silicone polyether comprising a heterocyclic moiety may also be used to form a solid polymer electrolyte that may be used to form a solid polymer electrolyte film, which may be suitable for use in electrochemical devices.
1. A silicone polyether of one of the Formula (1) or Formula (2):
where R 1 and R 2 are independently chosen from a C1-C10 alkyl, a C6-C30 aryl, or an alkoxy of the formula —OR 13 , where R 13 is a C1-C10 alkyl; R 3 is a C1-C10 alkylene; each occurrence of R 4 , R 5 , and R 6 is independently chosen from hydrogen or a C1-C10 alkyl; R 7 is a C2-C10 alkylene; R 8 is a C1-C10 alkylene; R 9 is a C1-C10 alkyl; R 10 is a C1-C10 alkylene; R 11 and R 12 are independently chosen from a C1-C10 alkyl, a C6-C30 aryl or an alkoxy of the formula —OR 13 , where R 13 is a C1-C10 alkyl; X is chosen from O, S, N—R 14 or P—R 15 , where R 14 and R 15 are independently chosen from hydrogen or a C1-C10 alkyl; and n is 2-50.
2. The silicone polyether of claim 1 , wherein R 4 , R 5 , and R 6 in Formula (1) are each hydrogen.
3. The silicone polyether of claim 1 , wherein R 1 and R 2 in Formula (1) are independently chosen from methyl, ethyl, propyl, or butyl.
4. The silicone polyether of claim 1 , wherein R 1 and R 2 in Formula (1) are each methyl.
5. The silicone polyether of claim 1 , wherein R 4 , R 5 , and R 6 in Formula (1) are each hydrogen, and R 1 and R 2 in Formula (1) are each methyl.
6. The silicone polyether of claim 1 , wherein R 4 , R 5 , and R 6 in Formula (2) are each hydrogen.
7. The silicone polyether of claim 1 , wherein R 1 , R 2 , R 11 , and R 12 in Formula (2) are independently chosen from methyl, ethyl, propyl or butyl.
8. The silicone polyether of claim 1 , wherein R 1 , R 2 , R 11 , and R 12 in Formula (2) are each methyl.
9. The silicone polyether of claim 1 , wherein R 4 , R 5 , and R 6 in Formula (2) are each hydrogen, and R 1 , R 2 , R 11 , and R 12 in Formula (2) are each methyl.
10. The silicone polyether of claim 1 , wherein X is O.
11. The silicone polyether of claim 1 wherein the silicone polyether is of the formula:
12. An electrolyte composition comprising (i) a silicone polyether, and (ii) a salt, the silicone polyether being chosen from a compound of one of the Formula (1) or Formula (2):
or a combination of two or more thereof; where R 1 and R 2 are independently chosen from a C1-C10 alkyl, a C6-C30 aryl, or an alkoxy of the formula 0R 13 , where R 13 is a C1-C10 alkyl; R 3 is a C1-C10 alkylene; each occurrence of R 4 , R 5 , and R 6 is independently chosen from hydrogen or a C1-C10 alkyl; R 7 is a C2-C10 alkylene; R 8 is a C1-C10 alkylene; R 9 is a C1-C10 alkyl; R 10 is a C1-C10 alkylene; and R 1-2 are independently chosen from a C1-C10 alkyl, a C6-C30 aryl or an alkoxy of the formula —OR 13 , where R 13 is a C1-C10 alkyl; X is chosen from O, S, N—R 14 or P—R 15 , where R 14 and R 15 are independently chosen from H or a C1-C10 alkyl; and n is an integer from 2-50.
13. The electrolyte composition of claim 12 , wherein R 4 , R 5 , and R 6 in the silicone polyether of Formula (1) are each hydrogen.
14. The electrolyte composition of claim 12 , wherein R 1 and R 2 in the silicone polyether of Formula (1) are independently chosen from methyl, ethyl, propyl or butyl.
15. The electrolyte composition of claim 12 , wherein R 1 and R 2 in the silicone polyether of Formula (1) are each methyl.
16. The electrolyte composition of claim 12 , wherein R 4 , R 5 , and R 6 are each hydrogen, and R 1 and R 2 are each methyl in the silicone polyether of Formula (1).
17. The electrolyte composition of claim 12 , wherein R 4 , R 5 , and R 6 in the silicone polyether of Formula (2) are each hydrogen.
18. The electrolyte composition of claim 12 , wherein R 1 , R 2 , R 11 , and R 12 in the silicone polyether of Formula (2) are independently chosen from methyl, ethyl, propyl or butyl.
19. The electrolyte composition of claim 12 , wherein R 1 , R 2 , R 11 , and R 12 in the silicone polyether of Formula (2) are each methyl.
20. The electrolyte composition of claim 12 , wherein R 4 , R 5 , and R 6 are each hydrogen, and R 1 , R 2 , R 11 , and R 12 in the silicone polyether of Formula (2) are each methyl.
21. The electrolyte composition of claim 12 , wherein X is O.
22. The electrolyte composition of claim 12 wherein the silicone polyether is chosen from:
or a combination thereof.
23. The electrolyte composition of claim 12 , wherein the salt is a lithium salt.
24. The electrolyte composition of claim 23 , wherein the lithium salt is chosen from LiClO 4 , LiCF 3 SO 3 , LiBF 4 , LiPF 6 , LiAsF 6 , LiN(SO 2 C2F 5 ) 2 , Li(CF 3 SO 2 )2N, Li(CF 3 SO 2 )3C, LiN(SO 2 C2F 5 )2, lithium alkyl fluorophosphates, organoborate salts, or a combination of two or more thereof.
25. The electrolyte composition of claim 12 , further comprising (iii) a solid polymer.
26. The electrolyte composition of claim 25 , wherein the solid polymer is chosen from polyacrylonitrile (PAN), poly(methyl methacrylate) (PMMA), poly(vinylidene fluoride) (PVDF), poly(vinylidene fluoride-co-hexafluoropropylene), polystyrene, polyvinyl chloride, poly(alkyl methacrylate), poly(alkyl acrylate), styrene butadiene rubber (SBR), poly(vinyl acetate), poly(ethylene oxide) (PEO), or a combination of two or more thereof.
27. The electrolyte composition of claim 25 , further comprising (iv) a plasticizer, wherein the plasticizer is chosen from an alkyl carbonate, a cyclic carbonate, a glyme, a polyalkylene glycol dialkyl ether, or a combination of two or more thereof.
28. The electrolyte composition of claim 12 , wherein the electrolyte composition has an ionic conductivity of about 1×10 −5 S/cm or greater.
29. The electrolyte composition of claim 12 , wherein the electrolyte composition has an ionic conductivity of about 1×10 −4 S/cm or greater.
30. The electrolyte composition of claim 12 , wherein the electrolyte composition has an ionic conductivity of about 1×10 −2 S/cm to about 1×10 −4 S/cm.
31. An electrochemical device comprising the electrolyte composition of claim 12 .