METHOD OF ELECTRODE PRODUCTION Russian patent published in 2010 - IPC H01M4/04 C25B11/04 

FIELD: electricity.

SUBSTANCE: electrode production method involves application of a coating onto a substrate by way of supersonic "cold" gas-dynamic spraying with the help of three simultaneously operating dispensers containing corundum, copper and a catalytic composition based on Ni-Al system intermetallides with subsequent etching and drying. The method provides for application of a catalytic layer onto the meal substrate surface being activated, smooth increase of the catalyst content from the substrate to the coating surface in linear fashion and development of porosity in the course of the concluding etching operation. The method increases the coating catalytic activity due to exclusion of partial decomposition of the catalyst during spraying and development of the coating porosity during etching.

EFFECT: improved adhesive strength of the coating due to the substrate surface activation and decrease of the difference in terms of thermal expansion factors, extended service life of the electrolytic cell.

3 cl, 1 dwg, 1 ex, 1 tbl