POLYMER GEL ELECTROLYTE-USE COMPOSITION AND METHOD OF POURING NON-AQUEOUS ELECTROLYTE SOLUTION

A polymer gel electrolyte-forming composition which includes a pregel composition having a viscosity at 20°C of at most 100 cP is impregnated into an electrical double-layer capacitor assembly or a cell assembly composed of a positive electrode, a negative electrode and a separator. This process enables the polymer gel electrolyte-forming composition to rapidly and uniformly penetrate into the cell or capacitor assembly and provides a battery or capacitor having excellent cycle properties.