| 摘要 |
PROBLEM TO BE SOLVED: To increase the capacity of an electrical double layer capacitor, to reduce the cost of the capacitor and to modify the reliability of the capacitor by a method, wherein a plasticizing agent is added to a binder in the parts of current-collecting bodies, a scattering of resins from an active carbon and a conductive lubricating agent is modified to set the density of the current-collecting bodies in a specified range and moreover, the flexibility of a current-collecting body film is modified. SOLUTION: An active carbon and a conductive lubricating agent are formed on the surfaces of conductive foils 6, containing a plasticizing agent along with more than one kind of resins from among ammonium salt of a carboxymethyl cellulose resin, a polyvinyl alcohol, a methyl cellulose and a hydroxyethyl cellulose as a current- collecting body film of a density of 0.35 g/cc or higher to 1.50/cc or lower. A plurality of the conductive foils 6 are wound or laminated via separators 8 and are sealed in a non-water electrode solution, along with extraction electrodes 10 to form an electrical double layer capacitor. By containing the plasticizing agent in the foils 6, a flexibility can be given to the current-collecting body film, and the electrical double layer capacitor of a higher performance is obtained. |
