METHOD OF MAKING CAPACITOR CATHODE PLATE AND SOLID-ELECTROLYTE CAPACITOR Russian patent published in 2012 - IPC H01G9/52 

FIELD: chemistry.

SUBSTANCE: method of making a capacitor cathode plate involves depositing to a section a multilayer coating of manganese dioxide which, when forming each layer, involves saturation of sections in aqueous manganese nitrate solution at temperature 40°C for 3-5 minutes, followed by pyrolytic decomposition of the manganese nitrate in the presence of water vapour at temperature 270°C for 3-5 minutes, when sections are moulded through 3 deposited layers in aqueous acetic acid solution, wherein the water vapour is formed at pyrolytic decomposition temperature from injecting deionised water in amount of 5-9 litres per minute, and the second last layer additionally contains silicon dioxide and is obtained by saturating sections with a silicon-manganese suspension with density 2.44 g/cm³, consisting of 60 wt % aqueous manganese nitrate solution, 39.5 wt % fine manganese dioxide powder and 0.5 wt % fine silicon dioxide powder, at temperature 65°C, followed by pyrolytic decomposition of manganese nitrate.

EFFECT: improved electrical and frequency characteristics.

6 cl, 2 dwg, 3 tbl, 3 ex