Patent ID: 6324049
Filing Date: 2001-11-27
Classification: H01G,Y02E

Abstract:
An electric double layer capacitor formed by stacking at least one basic cell comprising a pair of polarized electrodes opposing each other via a separator made from a porous material soaked in a water-based electrolytic solution, collectors contacting surfaces of said polarized electrodes away from surfaces in contact with said separator, gasket assembly so arranged as to surround peripheral end faces of said polarized electrodes forming a predetermined spacing therebetween, an electrolytic solution substantially filling said spacing, and said separator having a peripheral portion projecting from the end faces of the polarized electrodes, whereinthe peripheral portion of said separator projecting from the end faces of the polarized electrodes is surrounded by a material selected from the group consisting of a thermoplastic resin, a hot-melt material and an adhesive, thereby sealing said separator so as to prevent evaporation of electrolytic solution from said separator, and a surface of each of said pair of polarized electrodes contacts opposing sides of the separator.