Lead line for preventing erosion and electric double layer capacitor using the same

摘要

An anti-erosion lead line and an electric double layer capacitor using the same are provided to prevent the lead line from being contaminated by external materials by improving a structure of the lead line connected to an electrode. A cylindrical metal case(100) includes a space, where an electrode material(300) and electrolyte solution are contained. An aperture, through which a lead line of the electrode material is exposed, is formed on the case. A sealing plate(200) is made of an insulation resin and encloses the aperture of the case. A pair of holes, where the lead line penetrates, are formed on the sealing plate. An anode lead line(310) and a cathode lead line(320) are connected to an anode and a cathode of the electrode, respectively. A portion of the cathode and anode lead is inserted into the electrode material, while the rest of them is exposed outside the case and connected to an external circuit. An anti-acidic coating film is formed on a portion of the lead lines.