| 摘要 |
PURPOSE:To improve withstand voltage by using an electrolyte which contains salt consisting of a specific acid and a specific alkali. CONSTITUTION:An electric double layer capacitor consists of polarizable electrodes, separators and current collectors. It is an electrolyte-impregnated capacitor element contained in a case. If an electrolyte which contains salt consisting of one or more kinds of acids out of boron tetrafluoride ion, thiocyanic acid ion, tantalum hexafluoride ion and boron nitrotrifluoride ion and one or more kinds of alkalis out of quaternary ammonium ion, sulfonium ion and pyrrolidinium ion is used in the electric double layer capacitor, stability can be gained against the electrolyte and there is no precipitation of metal. As a result, withstand voltage and reliability of the capacitor is increased. |
