FIELD: electrical engineering.
SUBSTANCE: invention relates to the field of electrical engineering, namely to a method for producing a cathode coating based on an electrically conductive polymer from poly(3,4-ethylenedioxythiophene (PEDOT), as well as to a capacitor based on valve metals with such a coating. The effect is achieved due to the fact that the cathode coating based on an electrically conductive polymer is made by forming a multilayer film of poly(3,4-ethylenedioxythiophene) by gas-phase polymerization and by impregnation in PEDOT:PSS dispersions. An electrolytic capacitor with a cathode coating according to claim 1 contains an anode in the form of a sintered pressed volumetric porous body with a pressing density of 4.8 to 6.5 g/cm3, a sintering temperature of 1250 to 2100°C from valve metal powder with a specific charge of 1000 to 300000 μC/g, for example, tantalum, on the surface of which a dielectric layer is sequentially formed by carrying out an electrochemical oxidation reaction at a temperature of 25 to 90°C and a voltage of 8 to 300 V, a cathode coating based on poly(3,4-ethylenedioxythiophene) , as well as a carbon layer, which is a transitional coating, a silver-containing layer, which is a contact coating, which are placed in a leaky shell.
EFFECT: improving the capacitance characteristics of a capacitor.
8 cl, 1 dwg, 2 tbl, 2 ex
