FIELD: electrolytic production of non-ferrous metals from aqueous solutions of their salts; metallurgy and chemical industry. SUBSTANCE: cathode element includes matrix with monolithic band made from polymer material and located on electrolyte-air interface and on side edges; zones where band is located have through holes and lower edge is provided with slot over entire its width in which plate is pressed; this plate extends beyond lower end edge. Side edges of matrix have cylindrical beads; plate is made from fluoroplastic. EFFECT: reliable protection of cathode due to forming chemical bond between matrix and framing band. 3 cl, 4 dwg
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