The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 11, 1978
Filed:
Jul. 11, 1977
James R Brannan, Painesville, OH (US);
Diamond Shamrock Corporation, Cleveland, OH (US);
Abstract
An active coating comprised of a mixture of palladium oxide and zirconium dioxide deposited on a metal substrate selected from a group consisting of iron, nickel, cobalt and alloys thereof, results in a lower hydrogen overpotential at the cathode in the electrolysis of aqueous alkali metal halide solutions. Salts of the component metals of the coating are deposited on the cathode surface preferably by painting. The coating metals are then converted to the corresponding metal oxides through the heating of the coating and substrate to 300.degree. to 600.degree. C in an oxidizing atmosphere such as air or oxygen. The coating results in a lowering of the hydrogen discharge overpotential at the cathode surface of about 50 to 100 millivolts as compared with the hydrogen discharge overpotential for the mild steel substrate commonly used as a cathode in electrolysis cells.