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, 2006
Filed:
Feb. 28, 2002
Applicants:
Gian Nicola Martelli, Vimodrone, IT;
Fulvio Federico, Piacenza, IT;
Inventors:
Gian Nicola Martelli, Vimodrone, IT;
Fulvio Federico, Piacenza, IT;
Assignee:
De Nora Electtrodi S.p.A., , IT;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D 17/12 (2006.01);
U.S. Cl.
CPC ...
Abstract
An oxygen-depolarized cathode for aqueous hydrochloric acid electrolysis membrane cells is described, the cathode being in contact with the membrane and capable of preventing the release of hydrogen into oxygen even at the highest current densities. Hydrochloric acid may also be of technical grade with a concentration limited to 15%, whereas the operating temperature must not exceed 60° C. The cathode contains a mixture of rhodium sulphide and a metal of the platinum group applied in a single layer or alternatively applied separately in two distinct layers.