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:
Sep. 25, 1979
Filed:
May. 15, 1978
Applicant:
Inventor:
Christopher R Needes, Newark, DE (US);
Assignee:
E. I. Du Pont de Nemours & Company, Wilmington, DE (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25B / ; C25B / ; C25B / ; C25B / ;
U.S. Cl.
CPC ...
204 98 ; 204128 ; 2042 / ; 204292 ;
Abstract
A process for making an electrode having a Raney nickel surface layer of thickness greater than 75 microns and an average porosity of at least 11%, comprising interdiffusing aluminum and nickel on a conductive metal core at a temperature of at least 660.degree. C. to form a nickel-aluminum alloy layer on the core from which layer aluminum is selectively dissolved. When used as a cathode in an electrolytic cell for producing hydrogen, chlorine and caustic from brine, the electrode exhibits low hydrogen overvoltage.