Electrolytic solution and electrochemical device
The present invention provides, as one aspect, an electrolytic solution comprising a compound represented by the following formula (1) and a compound represented by the following formula (2): wherein R 1 to R 3 each independently represent an alkyl group or a fluorine atom, R 4 represents an alkylene group, and R 5 represents an organic group comprising a sulfur atom and not comprising a nitrogen atom; and wherein R 6 to R 8 each independently represent an alkyl group or a fluorine atom, R 9 represents an alkylene group, and R 10 represents an organic group comprising a nitrogen atom and not comprising a sulfur atom.
1. An electrolytic solution comprising a compound represented by the following formula (1) and a compound represented by the following formula (2):
wherein R 1 to R 3 each independently represent an alkyl group or a fluorine atom, R 4 represents an alkylene group, and R 5 represents an organic group comprising a sulfur atom and not comprising a nitrogen atom; and
wherein R 6 to R 8 each independently represent an alkyl group or a fluorine atom, R 9 represents an alkylene group, and R 10 represents an organic group comprising a nitrogen atom and not comprising a sulfur atom.
2. The electrolytic solution according to claim 1 , wherein a number of silicon atoms in one molecule of the compound represented by the formula (1) is one.
3. The electrolytic solution according to claim 1 , wherein
R 5 is a group represented by any of the following formula (3), formula (4) and formula (5):
wherein R 11 represents an alkyl group, and * represents a bond;
wherein R 12 represents an alkyl group, and * represents a bond; and
wherein R 13 represents an alkyl group, and * represents a bond.
4. The electrolytic solution according to claim 1 , wherein
R 10 is a group represented by the following formula (6):
wherein R 14 and R 15 each independently represent a hydrogen atom or an alkyl group, and * represents a bond.
5. The electrolytic solution according to claim 1 , wherein at least one of R 1 to R 3 is a fluorine atom.
6. The electrolytic solution according to claim 1 , wherein at least one of R 6 to R 8 is a fluorine atom.
7. An electrolytic solution comprising a compound represented by the following formula (1) and a compound represented by the following formula (2):
wherein R 1 to R 3 each independently represent an alkyl group or a fluorine atom, R 4 represents an alkylene group, and R 5 represents an organic group comprising a sulfur atom and not comprising a nitrogen atom; and
wherein R 6 to R 8 each independently represent an alkyl group or a fluorine atom, R 9 represents an alkylene group, and R 10 represents an organic group comprising a nitrogen atom and not comprising a sulfur atom,
wherein a total of contents of the compound represented by the formula (1) and the compound represented by the formula (2) is 10% by mass or less based on a total amount of the electrolytic solution.
8. An electrochemical device comprising:
a positive electrode;
a negative electrode; and
the electrolytic solution according to claim 1 .
9. The electrochemical device according to claim 8 , wherein the negative electrode comprises a carbon material.
10. The electrochemical device according to claim 9 , wherein the carbon material comprises graphite.
11. The electrochemical device according to claim 9 , wherein the negative electrode further comprises a material comprising at least one element of the group consisting of silicon and tin.
12. The electrochemical device according to claim 8 , wherein the electrochemical device is a non-aqueous electrolytic solution secondary battery or a capacitor.