Electrode for Membrane Electrolysis Cells
AssigneeIndustrie De Nora S.P.A.
InventorsAngelo Ottaviani, Leonello Carrettin, Dino Floriano Di Franco, Corrado Mojana, Michele Perego
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Abstract
The invention relates to an electrode for membrane electrolysis cells comprising a grooved metal support favouring the gas release and the electrolyte renewal on its surface. The grooved geometry of the support may be obtained by erosion of a metal sheet with abrasive media in a continuous process.
Claims18
Electrolysis cell comprising an ion-exchange membrane and at least one electrode in direct contact with said ion-exchange membrane, the electrode comprising a metal substrate having at least one surface equipped with a multiplicity of grooves, the depth of the grooves ranging from 0.001 to 0.1 mm and the distance between adjacent grooves ranging from 0.1 to 0.5 mm.
Process of electrolysis of an alkali chloride brine carried out by applying direct electric current in a membrane electrolysis cell comprising an ion-exchange membrane and at least one electrode in direct contact with said ion-exchange membrane, the electrode comprising a metal substrate having at least one surface equipped with a multiplicity of grooves, the depth of the grooves ranging from 0.001 to 0.1 mm and the distance between adjacent grooves ranging from 0.1 to 0.5 mm, the process comprising evolving a gaseous product on the surface of the at least one electrode.
Dependencies are inferred from the claim text.