초록 ▼

The invention relates to an electric double layer capacitor for large capacity used in regeneration or electric power storage for various electric appliances and electric vehicles, and its manufacturing method. As the resin to be used in the current collector, by adding low softening point resin, po

The invention relates to an electric double layer capacitor for large capacity used in regeneration or electric power storage for various electric appliances and electric vehicles, and its manufacturing method. As the resin to be used in the current collector, by adding low softening point resin, polytetrafluoroethylene resin, latex resin or the like, the flexibility, thick coating performance and winding performance are improved. By preparing the electrode solution for making such current collector by using a high pressure dispersion machine, the capacity and density of the current collector can be enhanced substantially. According to this manufacturing method, the electric double layer capacitor may be further increased in size, increased in capacity and lowered in cost.

대표청구항 ▼

[ What is claimed is:] [1.]1. An electric double layer capacitor wherein a current collector composed of activated carbon, conductive agent, at least one kind of ammonium salt of carboxyl methyl cellulose resin, polyvinyl alcohol, methyl cellulose and hydroxy propyl cellulose resin, and polytetraflu

[ What is claimed is:] [1.]1. An electric double layer capacitor wherein a current collector composed of activated carbon, conductive agent, at least one kind of ammonium salt of carboxyl methyl cellulose resin, polyvinyl alcohol, methyl cellulose and hydroxy propyl cellulose resin, and polytetrafluoroethylene resin dispersed together is formed on at least one plane of a conductive foil at a density in the range of 0.35 g/cc to 1.50 g/cc, anda plurality of said conductive foils are wound or laminated on a separator, and sealed in a nonaqueous electrode solution together with lead-out electrodes.