Patent ID: 6021039
Filing Date: 2000-02-01
Classification: H01G,Y02E

Abstract:
An electric double-layer capacitor including at least one basic cell and a pair of external terminals electrically connected to outer sides of the at least one basic cell, respectively;each of said at least one basic cell comprising:a tubular electrically-insulating gasket having a tubular inner space and opening ends;a pair of polarizable electrodes placed in said inner space of said gasket;a porous separator sandwiched between said pair of electrodes and placed in said inner space of said gasket to separate said inner space of said gasket;a pair of collectors placed to close said opening ends of said gasket, respectively:an electrolyte solution stored in said inner space of said gasket, said solution being absorbed to said pair of electrodes;each of said pair of electrodes having an inner surface contacted with an opposing surface of said separator and an outer surface contacted with a corresponding one of said pair of collectors;each of said pair of electrodes being formed by stacked sub-electrodes having at least one interface extending along said pair of collectors; andsaid at least one interface allowing ions of said electrolyte solution to diffuse between inside and outside of said pair of electrodes through said at least one interface.