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2 Polish Journal of Chemical Technology

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Thermally activated cathodes for the process of hydrogen evolution

Nawrat G., Kopyto D., Gonet M.

Polish Journal of Chemical Technology

2006

Vol. 8, nr 3

37-40

The paper presents the results of investigations concerning thermally coated electrodes to be used in processes with the participation of hydrogen. Active coatings based on nickel and cobalt with an admixture of platinum and ruthenium, obtained by means of thermal decomposition of the respective salts on the nickel substrate and stainless ferritic and austenitic steels, are characterized by the lowest overpotential of hydrogen. The values of the overpotential of hydrogen evolution in 1 M NaOH solution at the temperature of 25°C amount to about 80 mV at a current density of j = 10 mA/cm2.

Non-asbestos diaphragm-cathode systems

Nawrat G., Buczek T., Dukowicz A., Gonet M., Kopyto D.

Polish Journal of Chemical Technology

2003

Vol. 5, nr 3

69-71

The paper deals with the influence of the content of a thickening agent in the suspension for the depositing of Polyramix non-asbestos diaphragms on the applicability of such diaphragms in the electrolysis of sodium chloride solutions. The effect of the content of xanthane gum, used as a thickening agent, on the permeability of the brine has been determined, and also the influence of the activation of cathodes on performance indices of the obtained diaphragm-cathode systems in test analyses in an experimental electrolyser.