Cathode for electrolysis cell

Details Cathode for electrolysis cell Cathode for electrolysis cell

1984-07-19

1986-06-17

Metz, Andrew H.

Chemistry: electrical and wave energy

Processes and products

204 431, 204 492, 204242, 204252, 204290R, 4271266, 427352, C25B 116, B05D 310

Patent

active

045954682

ABSTRACT:
A cathode for the electrolysis of brine for the production of chlorine and caustic soda, whereby chlorate ions are produced, comprises a coating of e.g. Nickel alloyed with a metallic sacrificial component, the latter being leached out by a soltuion of sodium hydroxide. The remaining sodium hydroxide within the pores of the leached nickel coating is transformed into iron hydroxide upon application of an iron salt onto the nickel coating. The iron hydroxide acts as a suppressor for the excessive formation of chlorate ions in the caustic soda solution of the electrolysis cell.

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