abstract |
In the present invention, the anion has a bisphosphorosulfonylimide, and the cation includes one selected from the group consisting of imidazolium, pyrrolidinium, ammonium and piperidinium cations, and is thermally and electrochemically stable An ionic liquid containing halide at 10 ppm or less, a low viscosity, and a high electrical conductivity is provided. The ionic liquid of the present invention can be used as an electrolyte for a lithium battery, an electrochemical equipment, an ultracapacitor, a battery cell or the like. |