A gasket arrangement for a double layered capacitor and a method of fabricating a double layered capacitor

摘要

A component cell of an electric double-layer capacitor is fabricated by forming first and second half portions of the cell. In each of the half portions a polarized electrode 31a, 31b impregnated with electrolyte is pasted to a collector electrode 32a, 32b so that a stepped portion is formed on the periphery of the collector electrode. A gasket 33a, 33b is attached to the stepped portion of each half portion, and a center gasket 33c is attached to the periphery of a separator 30 which is placed between the first and second half portions. Pressure is then applied to the first and second half portions of the cell in directions towards each other at an elevated temperature so that all gaskets are thermally joined together. A plurality of such component cells are stacked in a layered structure and sealed in a package.