| 摘要 |
PROBLEM TO BE SOLVED: To provide a power storage device using, as an electrolyte, an ordinary temperature molten salt including a cyclic quaternary ammonium cation superior in reduction resistance and a monovalent anion.SOLUTION: A power storage device comprises, as an electrolyte, an ordinary temperature molten salt including a cyclic quaternary ammonium cation expressed by the formula (G1). [Of R1 to R5, one or each of two is an alkyl group, a methoxy group, a methoxymethyl group or a methoxyethyl group, of which the number of carbon atoms is 1-20; the other three or four are H; and Ais a monovalent imide-based anion, a monovalent methide-based anion, a perfluoro alkyl sulfonic acid anion, a tetrafluoro borate (BF) or hexafluorophosphate (PF).] |
