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. 01, 1986
Filed:
Jun. 27, 1984
Eric Killer, Wettingen, CH;
Gunther Scherer, Gebenstorf, CH;
BBC Brown, Boveri & Company, Ltd., Baden, CH;
Abstract
A depassivation layer is produced on an electrode for an electrochemical cell by applying one or more layers of a metal salt solution, containing the elements to be applied, to the substrate (1) which is to be coated and is in the form of a porous plate, by means of rolling an elastic roller (2) over the substrate, with the insertion of a solution carrier (3) in the form of felt or paper, and then drying the layer and subjecting it to a chemical/thermal treatment in air (heat treatment at 450.degree. C.). Good depassivation layers with a relatively small noble metal content can be produced in this way. The depassivation layer which, in the form of a homogeneous film, is at least partially coherent contains, as a finely divided, sub-microscopic mixture, electronically conductive sub-oxides/oxides of the substrate (1) in addition to noble metals/noble metal oxides, and it can also contain further components, such as SnO.sub.2.