Functionalized silanes and electrolyte compositions and electrochemical devices containing them
Described are compounds of the structure R4- a —Si-(Sp-Y) a —Z b , wherein “a” is integer from 1 to 4; “b” is an integer from 0 to (3×a); “Z,” which is absent when “b “R” or formula (II), wherein each “R” is halogen, C 1-6 linear or branched alkyl, alkenyl, or alkynyl or C 1-6 linear or branched halo-alkyl, halo-alkenyl, or halo-alkynyl; each “Sp” C 1-15 linear or branched alkylenyl or CMS linear or branched halo-alkylenyl; and each “Y” an organic polar group. Also described are electrolyte compositions containing one or more of these compounds.
1. A compound selected from the group consisting of:
(R) 4-a —Si-((Sp-Y)—Z b ) a (Formula I)
wherein:
“a” is 1; “b” is an integer from 0 to 3;
“Z,” which is absent when “b”=0, is selected from the group consisting of “R” and
wherein each “R” is independently selected from the group consisting of fluorine and C 1-6 linear or branched fluoro-alkyl, fluoro-alkenyl, or fluoro-alkynyl;
each “Sp” in Formulas I and II is independently selected from the group consisting of C 1-15 linear or branched fluoro-alkylenyl; and
each “Y” in Formula I is independently an organic polar group selected from the group consisting of:
wherein a curved bond denotes a C 2-6 akylene bridging moiety.
2. The compound according to claim 1 , wherein “b” is 1 and “Z” is “—R”.
3. The compound according to claim 1 , wherein at least one “R” is fluorine, and each “Sp” is independently selected from the group consisting of C 1-6 linear fluoro-alkylene.
4. The compound according to claim 1 , wherein “b” is 0.
5. The compound according to claim 1 , wherein “b” is 1.
6. The compound according to claim 1 , wherein “b” is 1 and “Z” is Formula II.
7. The compound according to claim 1 , wherein “b” is 2.
8. The compound according to claim 1 , wherein “b” is 3.
9. The compound according to claim 1 , wherein each “Y” is independently an organic polar group selected from the group consisting of:
10. An electrolyte composition comprising a compound as recited in claim 1 , in combination with a salt.
11. The electrolyte composition of claim 10 , wherein the salt is a lithium-containing salt.
12. An electrochemical device comprising an electrolyte composition as recited in claim 10 .
13. A compound selected from the group consisting of:
(R) 4-a —Si-((Sp-Y)—Z b ) a (Formula I)
wherein:
wherein “a” is 4, “b” is 1, and “Z” is “R”;
wherein each “R” is independently selected from the group consisting of halogen, C 1-6 linear or branched alkyl, alkenyl, or alkynyl and C 1-6 linear or branched halo-alkyl, halo-alkenyl, or halo-alkynyl;
each “Sp” in Formula I is independently selected from the group consisting of C 1-15 linear or branched alkylenyl and C 1-15 linear or branched halo-alkylenyl; and
each “Y” in Formula I is independently selected from the group consisting of an organic polar group.
14. The compound according to claim 13 , wherein each “Sp” is independently selected from the group consisting of C 1-6 linear alkylene.
15. The compound according to claim 13 , wherein each “Y” is independently an organic polar group selected from the group consisting of:
wherein a curved bond denotes a C 2-6 akylene bridging moiety.
16. The compound according to claim 13 , wherein each “Y” is independently an organic polar group selected from the group consisting of: