Narrow gap electrolysis cells
AssigneeEltech Systems Corporation
InventorsVittorio de Nora, Henri B. Beer
Life of this patent
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Abstract
A narrow gap electrolysis cell has anode and cathode compartments divided by an ionically-permeable separator, such as an ion-exchange membrane or a fibrous diaphragm, and a current feeder grid in electrical contact with a surface-activated particulate electrocatalytic material carried on a face of the separator. The particulate material has cores of a corrosion-resistant material preferably valve metal particles or sponge, or compounds thereof, as well as asbestos fibres and fibres of ion-exchange copolymeric perfluorocarbons, coated with a platinum-group metal catalyst in metal or oxide form. The surface-activated particles may be at least partly carried by a flexible electronically conductive foil between the current feeder grid and the separator.
Claims21
A narrow gap electrolysis cell having anode and cathode compartments divided by an ionically-permeable separator, the anode and cathode compartment containing an anode and a cathode at least one of which comprises a current feeder grid in electrical contact with a particulate electrocatalytic material carried on a face of said separator as an integral part thereof, said particulate electrocatalytic material comprising surface-activated particles having a core of corrosion-resistant non-precious material and an outer surface containing at least one platinum-group metal electrocatalyst in metal and/or oxide form.
A narrow gap electrolysis cell divided into anode and cathode compartments by an ionically-permeable separator, said anode compartment containing an anode comprising a current feeder grid in electrical contact with particulate electrocatalytic material carried on the anode-side face of said separator as an integral part thereof, said particulate electrocatalytic material comprising surface-activated particles having a core of corrosion-resistant non-precious material and an outer surface containing at least one platinum-group metal electrocatalyst in metal and/or oxide form, and said cathode compartment containing an oxygen cathode in contact with the cathode side of said separator and including means for supplying an oxygen-containing gas to said oxygen cathode.
Dependencies are inferred from the claim text.