| 摘要 |
PURPOSE:To get a chemically stabilized conductive film with high electric conductivity and a small contact resistance and to obtain a stabilized electric double layer capacitor with a small inner resistance, by placing the conductive film, which is made of a conductive metallic oxide with a doner impurity added, between a collector electrode and a polarization electrode at least on an anode side. CONSTITUTION:In an electric double layer capacitor which has conductive collector electrodes 1 and 2 on both sides of a structure consisting of a non-electron conductive and ion permeable porous separator 6 and polarization electrodes 5 and 5' which are installed on at least one side of the porous separator 6, a conductive film 4, which is made of a conductive metallic oxide with a doner impurity added, is placed between the collector electrode 2 and the polarization electrode 5' at least on an anode side. For example, 198.0g of SnCl4 is dissolved in 1,500g of water and 136.3g of NH4F is added, then 200ml of hydrochloric acid is added in the mixture, to make the SnO2 mother liquid. Nextly, a stainless plate is heated at 350deg.C or above and is sprayed with the SnO2 mother liquid, to form the conductive films 3 and 4 which is made of SnO2 added with fluorine. Then, the armoring cases 1 and 2 are punched from the stainless plate. |
