| abstract |
Provided is an electrolytic solution capable of maintaining the cycle characteristics of an electrochemical device, having a low resistance, and suppressing gas generation during cycling even when a fluorine-based solvent is used. An electrolyte solution comprising a solvent, wherein the solvent comprises a compound (1) represented by the following general formula (1) and a compound (2) represented by the following general formula (2). In formula (1), R a , R b , R c and R d are the same or different, and are -H, -F, -CH 3 or -CF 3 ; wherein, in R a , R b , R c and R d At least one of them is -F or -CF 3 , and at least one of Ra , R b , R c and R d is -CH 3 ; In formula (2), R e is a straight-chain or branched alkyl or alkoxy group with 1 to 5 carbon atoms optionally containing ether bonds; R f is a straight-chain or branched chain optionally containing ether bonds An alkyl group having 1 to 5 carbon atoms; wherein, at least one of Re and R f contains a fluorine atom. |