| 摘要 |
PURPOSE:To accurately control the capacitance of a capacitor within a prescribed standard by a method wherein a composition of a polarizing electrode is formed by an activated carbon powder, a carbon black, a ceramic powder and a binder. CONSTITUTION:A polarizing electrode is formed by adding a binder causing a shaping character to a mixture composed of an activated carbon powder, a carbon black and a ceramic powder which is inactive with regard to electrochemical oxidation and reduction, It is preferable that the ceramic powder is a highly stable material with regard to the electrochemical oxidation and reduction within a range of an impressed voltage of 1.8-2.8V. When a mixture ratio of the ceramic powder is changed appropriately, it is possible to freely change a content of the activated carbon powder which contributes to the formation of the capacitance of an electric double layer; accordingly, it is possible to accurately control the capacitance of an electric double layer capacitor. |
