The influence of silver additive on electrical resistance of the manganese dioxide surface
Abstract
The influence of silver additive on electrical resistance of the manganese dioxide surface
Incoming article date: 05.05.2015In the work presented for the first time experimental data on measurement of the ESR and impedance of a coating of manganese dioxide obtained from manganese nitrate with the addition of silver nitrate by thermolysis method. Analysis of coating (XRF, SEM, XRD) of manganese dioxide with the addition of silver show a significant decrease in the resistance of the coatings. The development of energy efficient coating of manganese dioxide is one of the key objectives in the technology of low-impedance tantalum capacitors. Obtained by thermolytic method (the processing temperature of 250 and 300 °C) coating of manganese dioxide with the addition of silver nitrate 27% solution of manganese nitrate was analyzed using the RLC. The results of studies on the effect of additives in the impregnation solution of manganese nitrate on the resistance of coatings of manganese dioxide showed the possibility of significant reduction of the resistance (15 times at a temperature of thermolysis at 250°C, 45 times at a temperature of thermolysis 300 °C) by reference to the precursor silver nitrate; raising the temperature of the thermolysis of manganese nitrate from 250 to 300°C leads to the decrease of the resistance of the coating; use freshly prepared solution of manganese nitrate leads to the decrease of the resistance of the coating.
Keywords: manganese nitrate, silver nitrate, manganese oxide, alloying, resistance, thermolysis