Finely divided RuO.sub.2 /plastic matrix
AssigneeDiamond Shamrock Technologies S.A.
InventorDenis F. DeCraene
Life of this patent
Estimating the term…
Abstract
Finely divided RuO.sub.2 serves as an efficient and long-lived electrocatalyst when dispersed in a polymer matrix chemically and mechanically inert to an electrolyte. When applied to a substrate, generally an electrically conductive substrate, an electrode, particularly suited for use as an anode at which oxygen is evolved, is obtained. A coating of polyvinylidene fluoride containing RuO.sub.2 having a particle size of less than 0.1 micron on a titanium substrate is exemplary.
Claims11
A coating for use in electrolytic applications which coating consists essentially of a solidified intimate mixture of a substantially chemically and mechanically inert organic polymer and a RuO.sub.2 electrocatalyst having a particle size of less than 0.1 micron.
An electrode for use in electrolytic processes which electrode consists essentially of a supporting substrate having a coating on at least a portion of the surface thereof which coating consists essentially of a solidified intimate mixture of a substantially chemically and mechanically inert organic polymer and a RuO.sub.2 electrocatalyst having a particle size of less than 0.1 micron.
An electrode for use in electrolytic processes which electrode consists essentially of an electrically conductive supporting substrate having a coating on at least a portion of the surface thereof which coating consists essentially of a solidified intimate mixture of a substantially chemically and mechanically inert organic polymer and a RuO.sub.2 electrocatalyst having a particle size of less than 0.1 micron.
An anode for use in electrolytic processes wherein oxygen is generated as the anode, which anode consists essentially of,
- a. a supporting substrate selected from the group consisting of nickel, steel, titanium, tantalum, zirconium, niobium, lead, lead-antimony alloys and lead-thallium alloys, and
- b. a coating consisting essentially of a solidified intimate mixture of a fluorocarbon polymer and a RuO.sub.2 electrocatalyst having a particle size of less than 0.1 micron, the weight ratio of RuO.sub.2 :polymer being from 6-1:1.
An electrocatalytic material consisting essentially of a solidified intimate mixture of a substantially chemically and mechanically inert organic polymer and an electrocatalyst of finely divided RuO.sub.2 having a particle size of less than 0.5 microns.
An electrocatalytic material consisting essentially of a solidified intimate mixture of a substantially chemically and mechanically inert organic polymer and an electrocatalyst of RuO.sub.2 having a particle size of approximately 0.1 to approximately 0.5 microns.
Dependencies are inferred from the claim text.