Quaternary ammonium salt and composition, and electrochemical device
A quaternary ammonium salt of the formula (1), a composition containing the quaternary ammonium salt and an organic solvent, and an electrochemical device using the salt wherein R 1 and R 2 are both methyl and X − is BF 4 − or N(CF 3 SO 2 ) 2 − .
1. A composition consisting of a quaternary ammonium salt of the formula (1)
wherein R 1 ˜R 2 are both methyl, and X − is BF 4 − , and, as an organic solvent, propylene carbonate.
2. An electrochemical device comprising, as an electrolytic solution, the composition of claim 1 .
3. An electrochemical device comprising an electrolyte, wherein the electrolyte consists of a quaternary ammonium salt of formula (1)
wherein R 1 ˜R 2 are both methyl, and X − is BF 4 − .
4. An electrochemical device comprising an electrolyte, wherein the electrolyte consists of a quaternary ammonium salt of formula (1)
wherein R 1 ˜R 2 are both methyl, and X − is N(CF 3 SO 2 ) 2 − .