abstract |
PROBLEM TO BE SOLVED: To provide a capacitor having excellent electric characteristics. A capacitor of the present invention is a capacitor including a first electrode, a second electrode, and a capacitance film disposed between the first electrode and the second electrode, wherein the capacitance film has a polymerizing property. It is composed of a cured product of a curable composition containing an ionic liquid, and the polymerizable ionic liquid is a group consisting of a predetermined polymerizable group-containing anion and a predetermined ammonium cation, phosphonium cation, imidazolium cation and pyridinium cation. And one or more polymerizable group-containing cations selected from the following. [Selection diagram] Figure 1 |