| 摘要 |
PROBLEM TO BE SOLVED: To reduce an inner resistance, when the electrolyte of an organic solution is used, and reduce residual moisture by setting an active carbon fiber cloth to a specific density or higher. SOLUTION: The density of an active carbon fiber cloth is set to 0.3 g/cm<3> or larger. With the model cell of an electric double-layer capacitor, an electrolyte 2 is arranged between counter active carbon electrodes 1a and 1b with, for example, a distance between electrodes of 2 mm, and vinyl chloride frame 3 that also becomes a spacer for preventing the leakage of the liquid of the electrolyte 2 with a silicon rubber 4. In this case, an active carbon fiber cloth used for the active carbon electrodes 1a and 1b has a specific surface area of 2,500 m<2> . Also, in the electrolyte 2, a support electrolyte is tetraethyleammonium tetrafluoroborate, a concentration is 0.3 Mol/l, and a solvent is propylenecarbonate. |
