| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric double-layer capacitor with large capacitor even at low temperatures. SOLUTION: An organic solvent-based electrolyte solution is obtained by dissolving a solute (tetraethylammonium perclorate, lithium perclorate, tetraethylammonium tetrafluoride borate or tetraethylammonium hexafluoride borate) of, for example, 0.01 to 3mol/l in an organic solvent including a 2-methyl sulfolane (for example, 2-methyl sulfolane of 70wt.% and propylene carbonate of 30wt.%). A polarizing electrode made of activated carbon fiber-based non- woven fabric is impregnated with the organic solvent-based electrolyte solution to form a double-layer capacitor. |
