| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric double-layered capacitor which has low internal resistance, can be charged and discharged with large currents, and uses an aqueous solution electrolyte with high long-period reliability. SOLUTION: The electric double-layer capacitor 3 is structured having a couple of a plate type polarizing electrode made of a carbon material containing the aqueous solution electrolyte, and a current collector arranged opposite each other across a separator and its outer circumferential part sealed with a sealing material. The current collector is a clad material 1 made of metals cladded with noble metal where it comes into contact with at least the plate type polarizing electrode, and a polarizing electrode 2 in use having a layer of noble metal formed by vapor-deposition, sputtering, or plating on the surface of the plate type polarizing electrode which comes into contact with the current collector. Consequently, the resistance of the current collector and the contact resistance between the current collector and a terminal plate decrease and an increase in the contact resistance between the current collector and terminal plate can be suppressed. Furthermore, the airtightness of the current collector is improved. |
