FUNCTIONALIZED SILANES AND ELECTROLYTE COMPOSITIONS AND ELECTROCHEMICAL DEVICES CONTAINING THEM
Described are compounds of the structure R 4-a —Si-((Sp-Y)—Z b ) a , wherein “a” is an integer from 1 to 3; “b” is an integer from 0 to (3×a); “Z,” which is absent when “b”=0, is halogen, C 1-6 linear or branched alkyl, alkenyl, or alkynyl, C 1-6 linear or branched halo-alkyl, halo-alkenyl, or halo-alkynyl, or 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 C 1-15 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 an integer from 1 to 3; “b” is an integer from 0 to (3×a);
“Z,” which is absent when “b”=0, is selected from the group consisting of halogen, C 1-6 linear or branched alkyl, alkenyl, or alkynyl, C 1-6 linear or branched halo-alkyl, halo-alkenyl, or halo-alkynyl, and
where 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, provided that at least one R is fluorine, bromine, or iodine;
each “Sp” in Formulas I and II 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
wherein a curved bond denotes a C 2-6 akylene bridging moiety.
2 . The compound according to claim 1 , wherein “a” is 1, and “b” is 0 to 3.
3 . The compound according to claim 1 , wherein “a” is 2, and “b” is 0 to 6.
4 . The compound according to claim 1 , wherein “a” is 3, and “b” is 0 to 9.
5 . The compound according to claim 1 , wherein at least one “R” is fluorine.
6 . The compound of claim 1 , wherein each “Y” is independently an organic polar group selected from the group consisting of:
7 . The compound of according to claim 1 , wherein “a” is 1, and “b” is 0 to 3.
8 . The compound according to claim 7 , wherein “b” is 1 and “Z” is selected from the group consisting of halogen, C 1-6 linear or branched alkyl, alkenyl, or alkynyl, C 1-6 linear or branched halo-alkyl, halo-alkenyl, or halo-alkynyl,
9 . The compound according to claim 7 , wherein at least one “R” is fluorine, and each “Sp” is independently selected from the group consisting of C 1-6 linear alkylene and C 1-6 linear fluoro-alkylene.
10 . The compound according to claim 1 , wherein “a” is 2, and “b” is 0 to 6.
11 . The compound according to claim 10 , wherein “b” is 1 and “Z” is selected from the group consisting of halogen, C 1-6 linear or branched alkyl, alkenyl, or alkynyl, C 1-6 linear or branched halo-alkyl, halo-alkenyl, or halo-alkynyl,
12 . The compound according to claim 10 , wherein at least one “R” is fluorine, and each “Sp” is independently selected from the group consisting of C 1-6 linear alkylene.
13 . The compound according to claim 1 , wherein “a” is 3, and “b” is 0 to 9.
14 . The compound according to claim 13 , wherein “b” is 1 and “Z” is selected from the group consisting of halogen, C 1-6 linear or branched alkyl, alkenyl, or alkynyl, C 1-6 linear or branched halo-alkyl, halo-alkenyl, or halo-alkynyl,
15 . The compound according to claim 13 , wherein at least one “R” is fluorine, and each “Sp” is independently selected from the group consisting of C 1-6 linear alkylene.
16 . An electrolyte composition comprising a compound as recited in claim 1 , in combination with a salt.
17 . The electrolyte composition of claim 16 , wherein the salt is a lithium-containing salt.
18 . An electrochemical device comprising an electrolyte composition as recited in claim 17 .