Electrodes and methods of preparation thereof

Details Electrodes and methods of preparation thereof Electrodes and methods of preparation thereof

C - Chemistry, Metallurgy

25

B

C25B 11/04 (2006.01)

Patent

CA 2181965

An electrode for electrolysis of solutions of electrolytes comprising a support of film forming metal or alloy thereof, having a composite coating consisting essentially of oxides of metals selected from the group consisting of iridium, ruthenium, titanium and tantalum having the molecular ratios (IrO2+RuO2):(TiO2+Ta2O5) is (1- 19):(3-1) wherein IrO2:RuO2 is (24-4):1 and TiO2:Ta2O5 is 1:(0-0.05). The electrodes are of particular use as anodes in the production of chlorine and alkali, electrosynthesis of chlorates and hypochlorites, electrolysis of sea and waste water and cathodicprotection. The electrodes have improved corrosive resistant to alkaline solutions and have improved interface stability to oxidation and blocking.

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