IONIC LIQUID, METHOD OF DEHYDRATION, ELECTRIC DOUBLE LAYER CAPACITOR, AND SECONDARY BATTERY

摘要

The water present within an ionic liquid that is in a liquid state at 25 DEG C or an organic solution containing at least one ionic compound is decomposed by bringing electrodes into contact with the ionic liquid or organic solution within an atmosphere having a dew-point temperature not higher than -40 DEG C or under a reduced pressure of not more than 75 torr, thereby reducing the water content. This process makes it possible to obtain highly dehydrated ionic liquids.